12 files changed, 2670 insertions, 0 deletions
diff --git a/npm_assets/node_modules/luxon/src/impl/conversions.js b/npm_assets/node_modules/luxon/src/impl/conversions.js
new file mode 100644
index 0000000..cbe7172
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/conversions.js
@@ -0,0 +1,157 @@
+import {
+  integerBetween,
+  isLeapYear,
+  timeObject,
+  daysInYear,
+  daysInMonth,
+  weeksInWeekYear,
+  isInteger
+} from "./util.js";
+import Invalid from "./invalid.js";
+
+const nonLeapLadder = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334],
+  leapLadder = [0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335];
+
+function unitOutOfRange(unit, value) {
+  return new Invalid(
+    "unit out of range",
+    `you specified ${value} (of type ${typeof value}) as a ${unit}, which is invalid`
+  );
+}
+
+function dayOfWeek(year, month, day) {
+  const js = new Date(Date.UTC(year, month - 1, day)).getUTCDay();
+  return js === 0 ? 7 : js;
+}
+
+function computeOrdinal(year, month, day) {
+  return day + (isLeapYear(year) ? leapLadder : nonLeapLadder)[month - 1];
+}
+
+function uncomputeOrdinal(year, ordinal) {
+  const table = isLeapYear(year) ? leapLadder : nonLeapLadder,
+    month0 = table.findIndex(i => i < ordinal),
+    day = ordinal - table[month0];
+  return { month: month0 + 1, day };
+}
+
+/**
+ * @private
+ */
+
+export function gregorianToWeek(gregObj) {
+  const { year, month, day } = gregObj,
+    ordinal = computeOrdinal(year, month, day),
+    weekday = dayOfWeek(year, month, day);
+
+  let weekNumber = Math.floor((ordinal - weekday + 10) / 7),
+    weekYear;
+
+  if (weekNumber < 1) {
+    weekYear = year - 1;
+    weekNumber = weeksInWeekYear(weekYear);
+  } else if (weekNumber > weeksInWeekYear(year)) {
+    weekYear = year + 1;
+    weekNumber = 1;
+  } else {
+    weekYear = year;
+  }
+
+  return Object.assign({ weekYear, weekNumber, weekday }, timeObject(gregObj));
+}
+
+export function weekToGregorian(weekData) {
+  const { weekYear, weekNumber, weekday } = weekData,
+    weekdayOfJan4 = dayOfWeek(weekYear, 1, 4),
+    yearInDays = daysInYear(weekYear);
+
+  let ordinal = weekNumber * 7 + weekday - weekdayOfJan4 - 3,
+    year;
+
+  if (ordinal < 1) {
+    year = weekYear - 1;
+    ordinal += daysInYear(year);
+  } else if (ordinal > yearInDays) {
+    year = weekYear + 1;
+    ordinal -= daysInYear(weekYear);
+  } else {
+    year = weekYear;
+  }
+
+  const { month, day } = uncomputeOrdinal(year, ordinal);
+
+  return Object.assign({ year, month, day }, timeObject(weekData));
+}
+
+export function gregorianToOrdinal(gregData) {
+  const { year, month, day } = gregData,
+    ordinal = computeOrdinal(year, month, day);
+
+  return Object.assign({ year, ordinal }, timeObject(gregData));
+}
+
+export function ordinalToGregorian(ordinalData) {
+  const { year, ordinal } = ordinalData,
+    { month, day } = uncomputeOrdinal(year, ordinal);
+
+  return Object.assign({ year, month, day }, timeObject(ordinalData));
+}
+
+export function hasInvalidWeekData(obj) {
+  const validYear = isInteger(obj.weekYear),
+    validWeek = integerBetween(obj.weekNumber, 1, weeksInWeekYear(obj.weekYear)),
+    validWeekday = integerBetween(obj.weekday, 1, 7);
+
+  if (!validYear) {
+    return unitOutOfRange("weekYear", obj.weekYear);
+  } else if (!validWeek) {
+    return unitOutOfRange("week", obj.week);
+  } else if (!validWeekday) {
+    return unitOutOfRange("weekday", obj.weekday);
+  } else return false;
+}
+
+export function hasInvalidOrdinalData(obj) {
+  const validYear = isInteger(obj.year),
+    validOrdinal = integerBetween(obj.ordinal, 1, daysInYear(obj.year));
+
+  if (!validYear) {
+    return unitOutOfRange("year", obj.year);
+  } else if (!validOrdinal) {
+    return unitOutOfRange("ordinal", obj.ordinal);
+  } else return false;
+}
+
+export function hasInvalidGregorianData(obj) {
+  const validYear = isInteger(obj.year),
+    validMonth = integerBetween(obj.month, 1, 12),
+    validDay = integerBetween(obj.day, 1, daysInMonth(obj.year, obj.month));
+
+  if (!validYear) {
+    return unitOutOfRange("year", obj.year);
+  } else if (!validMonth) {
+    return unitOutOfRange("month", obj.month);
+  } else if (!validDay) {
+    return unitOutOfRange("day", obj.day);
+  } else return false;
+}
+
+export function hasInvalidTimeData(obj) {
+  const { hour, minute, second, millisecond } = obj;
+  const validHour =
+      integerBetween(hour, 0, 23) ||
+      (hour === 24 && minute === 0 && second === 0 && millisecond === 0),
+    validMinute = integerBetween(minute, 0, 59),
+    validSecond = integerBetween(second, 0, 59),
+    validMillisecond = integerBetween(millisecond, 0, 999);
+
+  if (!validHour) {
+    return unitOutOfRange("hour", hour);
+  } else if (!validMinute) {
+    return unitOutOfRange("minute", minute);
+  } else if (!validSecond) {
+    return unitOutOfRange("second", second);
+  } else if (!validMillisecond) {
+    return unitOutOfRange("millisecond", millisecond);
+  } else return false;
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/diff.js b/npm_assets/node_modules/luxon/src/impl/diff.js
new file mode 100644
index 0000000..57246dc
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/diff.js
@@ -0,0 +1,79 @@
+import Duration from "../duration.js";
+
+function dayDiff(earlier, later) {
+  const utcDayStart = dt =>
+      dt
+        .toUTC(0, { keepLocalTime: true })
+        .startOf("day")
+        .valueOf(),
+    ms = utcDayStart(later) - utcDayStart(earlier);
+  return Math.floor(Duration.fromMillis(ms).as("days"));
+}
+
+function highOrderDiffs(cursor, later, units) {
+  const differs = [
+    ["years", (a, b) => b.year - a.year],
+    ["months", (a, b) => b.month - a.month + (b.year - a.year) * 12],
+    [
+      "weeks",
+      (a, b) => {
+        const days = dayDiff(a, b);
+        return (days - (days % 7)) / 7;
+      }
+    ],
+    ["days", dayDiff]
+  ];
+
+  const results = {};
+  let lowestOrder, highWater;
+
+  for (const [unit, differ] of differs) {
+    if (units.indexOf(unit) >= 0) {
+      lowestOrder = unit;
+
+      let delta = differ(cursor, later);
+      highWater = cursor.plus({ [unit]: delta });
+
+      if (highWater > later) {
+        cursor = cursor.plus({ [unit]: delta - 1 });
+        delta -= 1;
+      } else {
+        cursor = highWater;
+      }
+
+      results[unit] = delta;
+    }
+  }
+
+  return [cursor, results, highWater, lowestOrder];
+}
+
+export default function(earlier, later, units, opts) {
+  let [cursor, results, highWater, lowestOrder] = highOrderDiffs(earlier, later, units);
+
+  const remainingMillis = later - cursor;
+
+  const lowerOrderUnits = units.filter(
+    u => ["hours", "minutes", "seconds", "milliseconds"].indexOf(u) >= 0
+  );
+
+  if (lowerOrderUnits.length === 0) {
+    if (highWater < later) {
+      highWater = cursor.plus({ [lowestOrder]: 1 });
+    }
+
+    if (highWater !== cursor) {
+      results[lowestOrder] = (results[lowestOrder] || 0) + remainingMillis / (highWater - cursor);
+    }
+  }
+
+  const duration = Duration.fromObject(Object.assign(results, opts));
+
+  if (lowerOrderUnits.length > 0) {
+    return Duration.fromMillis(remainingMillis, opts)
+      .shiftTo(...lowerOrderUnits)
+      .plus(duration);
+  } else {
+    return duration;
+  }
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/digits.js b/npm_assets/node_modules/luxon/src/impl/digits.js
new file mode 100644
index 0000000..0d081c2
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/digits.js
@@ -0,0 +1,76 @@
+const numberingSystems = {
+  arab: "[\u0660-\u0669]",
+  arabext: "[\u06F0-\u06F9]",
+  bali: "[\u1B50-\u1B59]",
+  beng: "[\u09E6-\u09EF]",
+  deva: "[\u0966-\u096F]",
+  fullwide: "[\uFF10-\uFF19]",
+  gujr: "[\u0AE6-\u0AEF]",
+  hanidec: "[〇|一|二|三|四|五|六|七|八|九]",
+  khmr: "[\u17E0-\u17E9]",
+  knda: "[\u0CE6-\u0CEF]",
+  laoo: "[\u0ED0-\u0ED9]",
+  limb: "[\u1946-\u194F]",
+  mlym: "[\u0D66-\u0D6F]",
+  mong: "[\u1810-\u1819]",
+  mymr: "[\u1040-\u1049]",
+  orya: "[\u0B66-\u0B6F]",
+  tamldec: "[\u0BE6-\u0BEF]",
+  telu: "[\u0C66-\u0C6F]",
+  thai: "[\u0E50-\u0E59]",
+  tibt: "[\u0F20-\u0F29]",
+  latn: "\\d"
+};
+
+const numberingSystemsUTF16 = {
+  arab: [1632, 1641],
+  arabext: [1776, 1785],
+  bali: [6992, 7001],
+  beng: [2534, 2543],
+  deva: [2406, 2415],
+  fullwide: [65296, 65303],
+  gujr: [2790, 2799],
+  khmr: [6112, 6121],
+  knda: [3302, 3311],
+  laoo: [3792, 3801],
+  limb: [6470, 6479],
+  mlym: [3430, 3439],
+  mong: [6160, 6169],
+  mymr: [4160, 4169],
+  orya: [2918, 2927],
+  tamldec: [3046, 3055],
+  telu: [3174, 3183],
+  thai: [3664, 3673],
+  tibt: [3872, 3881]
+};
+
+// eslint-disable-next-line
+const hanidecChars = numberingSystems.hanidec.replace(/[\[|\]]/g, "").split("");
+
+export function parseDigits(str) {
+  let value = parseInt(str, 10);
+  if (isNaN(value)) {
+    value = "";
+    for (let i = 0; i < str.length; i++) {
+      const code = str.charCodeAt(i);
+
+      if (str[i].search(numberingSystems.hanidec) !== -1) {
+        value += hanidecChars.indexOf(str[i]);
+      } else {
+        for (const key in numberingSystemsUTF16) {
+          const [min, max] = numberingSystemsUTF16[key];
+          if (code >= min && code <= max) {
+            value += code - min;
+          }
+        }
+      }
+    }
+    return parseInt(value, 10);
+  } else {
+    return value;
+  }
+}
+
+export function digitRegex({ numberingSystem }, append = "") {
+  return new RegExp(`${numberingSystems[numberingSystem || "latn"]}${append}`);
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/english.js b/npm_assets/node_modules/luxon/src/impl/english.js
new file mode 100644
index 0000000..633f594
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/english.js
@@ -0,0 +1,233 @@
+import * as Formats from "./formats.js";
+import { pick } from "./util.js";
+
+function stringify(obj) {
+  return JSON.stringify(obj, Object.keys(obj).sort());
+}
+
+/**
+ * @private
+ */
+
+export const monthsLong = [
+  "January",
+  "February",
+  "March",
+  "April",
+  "May",
+  "June",
+  "July",
+  "August",
+  "September",
+  "October",
+  "November",
+  "December"
+];
+
+export const monthsShort = [
+  "Jan",
+  "Feb",
+  "Mar",
+  "Apr",
+  "May",
+  "Jun",
+  "Jul",
+  "Aug",
+  "Sep",
+  "Oct",
+  "Nov",
+  "Dec"
+];
+
+export const monthsNarrow = ["J", "F", "M", "A", "M", "J", "J", "A", "S", "O", "N", "D"];
+
+export function months(length) {
+  switch (length) {
+    case "narrow":
+      return monthsNarrow;
+    case "short":
+      return monthsShort;
+    case "long":
+      return monthsLong;
+    case "numeric":
+      return ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"];
+    case "2-digit":
+      return ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"];
+    default:
+      return null;
+  }
+}
+
+export const weekdaysLong = [
+  "Monday",
+  "Tuesday",
+  "Wednesday",
+  "Thursday",
+  "Friday",
+  "Saturday",
+  "Sunday"
+];
+
+export const weekdaysShort = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"];
+
+export const weekdaysNarrow = ["M", "T", "W", "T", "F", "S", "S"];
+
+export function weekdays(length) {
+  switch (length) {
+    case "narrow":
+      return weekdaysNarrow;
+    case "short":
+      return weekdaysShort;
+    case "long":
+      return weekdaysLong;
+    case "numeric":
+      return ["1", "2", "3", "4", "5", "6", "7"];
+    default:
+      return null;
+  }
+}
+
+export const meridiems = ["AM", "PM"];
+
+export const erasLong = ["Before Christ", "Anno Domini"];
+
+export const erasShort = ["BC", "AD"];
+
+export const erasNarrow = ["B", "A"];
+
+export function eras(length) {
+  switch (length) {
+    case "narrow":
+      return erasNarrow;
+    case "short":
+      return erasShort;
+    case "long":
+      return erasLong;
+    default:
+      return null;
+  }
+}
+
+export function meridiemForDateTime(dt) {
+  return meridiems[dt.hour < 12 ? 0 : 1];
+}
+
+export function weekdayForDateTime(dt, length) {
+  return weekdays(length)[dt.weekday - 1];
+}
+
+export function monthForDateTime(dt, length) {
+  return months(length)[dt.month - 1];
+}
+
+export function eraForDateTime(dt, length) {
+  return eras(length)[dt.year < 0 ? 0 : 1];
+}
+
+export function formatRelativeTime(unit, count, numeric = "always", narrow = false) {
+  const units = {
+    years: ["year", "yr."],
+    quarters: ["quarter", "qtr."],
+    months: ["month", "mo."],
+    weeks: ["week", "wk."],
+    days: ["day", "day", "days"],
+    hours: ["hour", "hr."],
+    minutes: ["minute", "min."],
+    seconds: ["second", "sec."]
+  };
+
+  const lastable = ["hours", "minutes", "seconds"].indexOf(unit) === -1;
+
+  if (numeric === "auto" && lastable) {
+    const isDay = unit === "days";
+    switch (count) {
+      case 1:
+        return isDay ? "tomorrow" : `next ${units[unit][0]}`;
+      case -1:
+        return isDay ? "yesterday" : `last ${units[unit][0]}`;
+      case 0:
+        return isDay ? "today" : `this ${units[unit][0]}`;
+      default: // fall through
+    }
+  }
+
+  const isInPast = Object.is(count, -0) || count < 0,
+    fmtValue = Math.abs(count),
+    singular = fmtValue === 1,
+    lilUnits = units[unit],
+    fmtUnit = narrow
+      ? singular
+        ? lilUnits[1]
+        : lilUnits[2] || lilUnits[1]
+      : singular
+        ? units[unit][0]
+        : unit;
+  return isInPast ? `${fmtValue} ${fmtUnit} ago` : `in ${fmtValue} ${fmtUnit}`;
+}
+
+export function formatString(knownFormat) {
+  // these all have the offsets removed because we don't have access to them
+  // without all the intl stuff this is backfilling
+  const filtered = pick(knownFormat, [
+      "weekday",
+      "era",
+      "year",
+      "month",
+      "day",
+      "hour",
+      "minute",
+      "second",
+      "timeZoneName",
+      "hour12"
+    ]),
+    key = stringify(filtered),
+    dateTimeHuge = "EEEE, LLLL d, yyyy, h:mm a";
+  switch (key) {
+    case stringify(Formats.DATE_SHORT):
+      return "M/d/yyyy";
+    case stringify(Formats.DATE_MED):
+      return "LLL d, yyyy";
+    case stringify(Formats.DATE_MED_WITH_WEEKDAY):
+      return "EEE, LLL d, yyyy";
+    case stringify(Formats.DATE_FULL):
+      return "LLLL d, yyyy";
+    case stringify(Formats.DATE_HUGE):
+      return "EEEE, LLLL d, yyyy";
+    case stringify(Formats.TIME_SIMPLE):
+      return "h:mm a";
+    case stringify(Formats.TIME_WITH_SECONDS):
+      return "h:mm:ss a";
+    case stringify(Formats.TIME_WITH_SHORT_OFFSET):
+      return "h:mm a";
+    case stringify(Formats.TIME_WITH_LONG_OFFSET):
+      return "h:mm a";
+    case stringify(Formats.TIME_24_SIMPLE):
+      return "HH:mm";
+    case stringify(Formats.TIME_24_WITH_SECONDS):
+      return "HH:mm:ss";
+    case stringify(Formats.TIME_24_WITH_SHORT_OFFSET):
+      return "HH:mm";
+    case stringify(Formats.TIME_24_WITH_LONG_OFFSET):
+      return "HH:mm";
+    case stringify(Formats.DATETIME_SHORT):
+      return "M/d/yyyy, h:mm a";
+    case stringify(Formats.DATETIME_MED):
+      return "LLL d, yyyy, h:mm a";
+    case stringify(Formats.DATETIME_FULL):
+      return "LLLL d, yyyy, h:mm a";
+    case stringify(Formats.DATETIME_HUGE):
+      return dateTimeHuge;
+    case stringify(Formats.DATETIME_SHORT_WITH_SECONDS):
+      return "M/d/yyyy, h:mm:ss a";
+    case stringify(Formats.DATETIME_MED_WITH_SECONDS):
+      return "LLL d, yyyy, h:mm:ss a";
+    case stringify(Formats.DATETIME_MED_WITH_WEEKDAY):
+      return "EEE, d LLL yyyy, h:mm a";
+    case stringify(Formats.DATETIME_FULL_WITH_SECONDS):
+      return "LLLL d, yyyy, h:mm:ss a";
+    case stringify(Formats.DATETIME_HUGE_WITH_SECONDS):
+      return "EEEE, LLLL d, yyyy, h:mm:ss a";
+    default:
+      return dateTimeHuge;
+  }
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/formats.js b/npm_assets/node_modules/luxon/src/impl/formats.js
new file mode 100644
index 0000000..25210f6
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/formats.js
@@ -0,0 +1,191 @@
+/**
+ * @private
+ */
+
+const n = "numeric",
+  s = "short",
+  l = "long";
+
+export const DATE_SHORT = {
+  year: n,
+  month: n,
+  day: n
+};
+
+export const DATE_MED = {
+  year: n,
+  month: s,
+  day: n
+};
+
+export const DATE_MED_WITH_WEEKDAY = {
+  year: n,
+  month: s,
+  day: n,
+  weekday: s
+};
+
+export const DATE_FULL = {
+  year: n,
+  month: l,
+  day: n
+};
+
+export const DATE_HUGE = {
+  year: n,
+  month: l,
+  day: n,
+  weekday: l
+};
+
+export const TIME_SIMPLE = {
+  hour: n,
+  minute: n
+};
+
+export const TIME_WITH_SECONDS = {
+  hour: n,
+  minute: n,
+  second: n
+};
+
+export const TIME_WITH_SHORT_OFFSET = {
+  hour: n,
+  minute: n,
+  second: n,
+  timeZoneName: s
+};
+
+export const TIME_WITH_LONG_OFFSET = {
+  hour: n,
+  minute: n,
+  second: n,
+  timeZoneName: l
+};
+
+export const TIME_24_SIMPLE = {
+  hour: n,
+  minute: n,
+  hour12: false
+};
+
+/**
+ * {@link toLocaleString}; format like '09:30:23', always 24-hour.
+ */
+export const TIME_24_WITH_SECONDS = {
+  hour: n,
+  minute: n,
+  second: n,
+  hour12: false
+};
+
+/**
+ * {@link toLocaleString}; format like '09:30:23 EDT', always 24-hour.
+ */
+export const TIME_24_WITH_SHORT_OFFSET = {
+  hour: n,
+  minute: n,
+  second: n,
+  hour12: false,
+  timeZoneName: s
+};
+
+/**
+ * {@link toLocaleString}; format like '09:30:23 Eastern Daylight Time', always 24-hour.
+ */
+export const TIME_24_WITH_LONG_OFFSET = {
+  hour: n,
+  minute: n,
+  second: n,
+  hour12: false,
+  timeZoneName: l
+};
+
+/**
+ * {@link toLocaleString}; format like '10/14/1983, 9:30 AM'. Only 12-hour if the locale is.
+ */
+export const DATETIME_SHORT = {
+  year: n,
+  month: n,
+  day: n,
+  hour: n,
+  minute: n
+};
+
+/**
+ * {@link toLocaleString}; format like '10/14/1983, 9:30:33 AM'. Only 12-hour if the locale is.
+ */
+export const DATETIME_SHORT_WITH_SECONDS = {
+  year: n,
+  month: n,
+  day: n,
+  hour: n,
+  minute: n,
+  second: n
+};
+
+export const DATETIME_MED = {
+  year: n,
+  month: s,
+  day: n,
+  hour: n,
+  minute: n
+};
+
+export const DATETIME_MED_WITH_SECONDS = {
+  year: n,
+  month: s,
+  day: n,
+  hour: n,
+  minute: n,
+  second: n
+};
+
+export const DATETIME_MED_WITH_WEEKDAY = {
+  year: n,
+  month: s,
+  day: n,
+  weekday: s,
+  hour: n,
+  minute: n
+};
+
+export const DATETIME_FULL = {
+  year: n,
+  month: l,
+  day: n,
+  hour: n,
+  minute: n,
+  timeZoneName: s
+};
+
+export const DATETIME_FULL_WITH_SECONDS = {
+  year: n,
+  month: l,
+  day: n,
+  hour: n,
+  minute: n,
+  second: n,
+  timeZoneName: s
+};
+
+export const DATETIME_HUGE = {
+  year: n,
+  month: l,
+  day: n,
+  weekday: l,
+  hour: n,
+  minute: n,
+  timeZoneName: l
+};
+
+export const DATETIME_HUGE_WITH_SECONDS = {
+  year: n,
+  month: l,
+  day: n,
+  weekday: l,
+  hour: n,
+  minute: n,
+  second: n,
+  timeZoneName: l
+};
diff --git a/npm_assets/node_modules/luxon/src/impl/formatter.js b/npm_assets/node_modules/luxon/src/impl/formatter.js
new file mode 100644
index 0000000..98872f9
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/formatter.js
@@ -0,0 +1,386 @@
+import * as English from "./english.js";
+import * as Formats from "./formats.js";
+import { hasFormatToParts, padStart } from "./util.js";
+
+function stringifyTokens(splits, tokenToString) {
+  let s = "";
+  for (const token of splits) {
+    if (token.literal) {
+      s += token.val;
+    } else {
+      s += tokenToString(token.val);
+    }
+  }
+  return s;
+}
+
+const macroTokenToFormatOpts = {
+  D: Formats.DATE_SHORT,
+  DD: Formats.DATE_MED,
+  DDD: Formats.DATE_FULL,
+  DDDD: Formats.DATE_HUGE,
+  t: Formats.TIME_SIMPLE,
+  tt: Formats.TIME_WITH_SECONDS,
+  ttt: Formats.TIME_WITH_SHORT_OFFSET,
+  tttt: Formats.TIME_WITH_LONG_OFFSET,
+  T: Formats.TIME_24_SIMPLE,
+  TT: Formats.TIME_24_WITH_SECONDS,
+  TTT: Formats.TIME_24_WITH_SHORT_OFFSET,
+  TTTT: Formats.TIME_24_WITH_LONG_OFFSET,
+  f: Formats.DATETIME_SHORT,
+  ff: Formats.DATETIME_MED,
+  fff: Formats.DATETIME_FULL,
+  ffff: Formats.DATETIME_HUGE,
+  F: Formats.DATETIME_SHORT_WITH_SECONDS,
+  FF: Formats.DATETIME_MED_WITH_SECONDS,
+  FFF: Formats.DATETIME_FULL_WITH_SECONDS,
+  FFFF: Formats.DATETIME_HUGE_WITH_SECONDS
+};
+
+/**
+ * @private
+ */
+
+export default class Formatter {
+  static create(locale, opts = {}) {
+    return new Formatter(locale, opts);
+  }
+
+  static parseFormat(fmt) {
+    let current = null,
+      currentFull = "",
+      bracketed = false;
+    const splits = [];
+    for (let i = 0; i < fmt.length; i++) {
+      const c = fmt.charAt(i);
+      if (c === "'") {
+        if (currentFull.length > 0) {
+          splits.push({ literal: bracketed, val: currentFull });
+        }
+        current = null;
+        currentFull = "";
+        bracketed = !bracketed;
+      } else if (bracketed) {
+        currentFull += c;
+      } else if (c === current) {
+        currentFull += c;
+      } else {
+        if (currentFull.length > 0) {
+          splits.push({ literal: false, val: currentFull });
+        }
+        currentFull = c;
+        current = c;
+      }
+    }
+
+    if (currentFull.length > 0) {
+      splits.push({ literal: bracketed, val: currentFull });
+    }
+
+    return splits;
+  }
+
+  static macroTokenToFormatOpts(token) {
+    return macroTokenToFormatOpts[token];
+  }
+
+  constructor(locale, formatOpts) {
+    this.opts = formatOpts;
+    this.loc = locale;
+    this.systemLoc = null;
+  }
+
+  formatWithSystemDefault(dt, opts) {
+    if (this.systemLoc === null) {
+      this.systemLoc = this.loc.redefaultToSystem();
+    }
+    const df = this.systemLoc.dtFormatter(dt, Object.assign({}, this.opts, opts));
+    return df.format();
+  }
+
+  formatDateTime(dt, opts = {}) {
+    const df = this.loc.dtFormatter(dt, Object.assign({}, this.opts, opts));
+    return df.format();
+  }
+
+  formatDateTimeParts(dt, opts = {}) {
+    const df = this.loc.dtFormatter(dt, Object.assign({}, this.opts, opts));
+    return df.formatToParts();
+  }
+
+  resolvedOptions(dt, opts = {}) {
+    const df = this.loc.dtFormatter(dt, Object.assign({}, this.opts, opts));
+    return df.resolvedOptions();
+  }
+
+  num(n, p = 0) {
+    // we get some perf out of doing this here, annoyingly
+    if (this.opts.forceSimple) {
+      return padStart(n, p);
+    }
+
+    const opts = Object.assign({}, this.opts);
+
+    if (p > 0) {
+      opts.padTo = p;
+    }
+
+    return this.loc.numberFormatter(opts).format(n);
+  }
+
+  formatDateTimeFromString(dt, fmt) {
+    const knownEnglish = this.loc.listingMode() === "en",
+      useDateTimeFormatter =
+        this.loc.outputCalendar && this.loc.outputCalendar !== "gregory" && hasFormatToParts(),
+      string = (opts, extract) => this.loc.extract(dt, opts, extract),
+      formatOffset = opts => {
+        if (dt.isOffsetFixed && dt.offset === 0 && opts.allowZ) {
+          return "Z";
+        }
+
+        return dt.isValid ? dt.zone.formatOffset(dt.ts, opts.format) : "";
+      },
+      meridiem = () =>
+        knownEnglish
+          ? English.meridiemForDateTime(dt)
+          : string({ hour: "numeric", hour12: true }, "dayperiod"),
+      month = (length, standalone) =>
+        knownEnglish
+          ? English.monthForDateTime(dt, length)
+          : string(standalone ? { month: length } : { month: length, day: "numeric" }, "month"),
+      weekday = (length, standalone) =>
+        knownEnglish
+          ? English.weekdayForDateTime(dt, length)
+          : string(
+              standalone ? { weekday: length } : { weekday: length, month: "long", day: "numeric" },
+              "weekday"
+            ),
+      maybeMacro = token => {
+        const formatOpts = Formatter.macroTokenToFormatOpts(token);
+        if (formatOpts) {
+          return this.formatWithSystemDefault(dt, formatOpts);
+        } else {
+          return token;
+        }
+      },
+      era = length =>
+        knownEnglish ? English.eraForDateTime(dt, length) : string({ era: length }, "era"),
+      tokenToString = token => {
+        // Where possible: http://cldr.unicode.org/translation/date-time#TOC-Stand-Alone-vs.-Format-Styles
+        switch (token) {
+          // ms
+          case "S":
+            return this.num(dt.millisecond);
+          case "u":
+          // falls through
+          case "SSS":
+            return this.num(dt.millisecond, 3);
+          // seconds
+          case "s":
+            return this.num(dt.second);
+          case "ss":
+            return this.num(dt.second, 2);
+          // minutes
+          case "m":
+            return this.num(dt.minute);
+          case "mm":
+            return this.num(dt.minute, 2);
+          // hours
+          case "h":
+            return this.num(dt.hour % 12 === 0 ? 12 : dt.hour % 12);
+          case "hh":
+            return this.num(dt.hour % 12 === 0 ? 12 : dt.hour % 12, 2);
+          case "H":
+            return this.num(dt.hour);
+          case "HH":
+            return this.num(dt.hour, 2);
+          // offset
+          case "Z":
+            // like +6
+            return formatOffset({ format: "narrow", allowZ: this.opts.allowZ });
+          case "ZZ":
+            // like +06:00
+            return formatOffset({ format: "short", allowZ: this.opts.allowZ });
+          case "ZZZ":
+            // like +0600
+            return formatOffset({ format: "techie", allowZ: this.opts.allowZ });
+          case "ZZZZ":
+            // like EST
+            return dt.zone.offsetName(dt.ts, { format: "short", locale: this.loc.locale });
+          case "ZZZZZ":
+            // like Eastern Standard Time
+            return dt.zone.offsetName(dt.ts, { format: "long", locale: this.loc.locale });
+          // zone
+          case "z":
+            // like America/New_York
+            return dt.zoneName;
+          // meridiems
+          case "a":
+            return meridiem();
+          // dates
+          case "d":
+            return useDateTimeFormatter ? string({ day: "numeric" }, "day") : this.num(dt.day);
+          case "dd":
+            return useDateTimeFormatter ? string({ day: "2-digit" }, "day") : this.num(dt.day, 2);
+          // weekdays - standalone
+          case "c":
+            // like 1
+            return this.num(dt.weekday);
+          case "ccc":
+            // like 'Tues'
+            return weekday("short", true);
+          case "cccc":
+            // like 'Tuesday'
+            return weekday("long", true);
+          case "ccccc":
+            // like 'T'
+            return weekday("narrow", true);
+          // weekdays - format
+          case "E":
+            // like 1
+            return this.num(dt.weekday);
+          case "EEE":
+            // like 'Tues'
+            return weekday("short", false);
+          case "EEEE":
+            // like 'Tuesday'
+            return weekday("long", false);
+          case "EEEEE":
+            // like 'T'
+            return weekday("narrow", false);
+          // months - standalone
+          case "L":
+            // like 1
+            return useDateTimeFormatter
+              ? string({ month: "numeric", day: "numeric" }, "month")
+              : this.num(dt.month);
+          case "LL":
+            // like 01, doesn't seem to work
+            return useDateTimeFormatter
+              ? string({ month: "2-digit", day: "numeric" }, "month")
+              : this.num(dt.month, 2);
+          case "LLL":
+            // like Jan
+            return month("short", true);
+          case "LLLL":
+            // like January
+            return month("long", true);
+          case "LLLLL":
+            // like J
+            return month("narrow", true);
+          // months - format
+          case "M":
+            // like 1
+            return useDateTimeFormatter
+              ? string({ month: "numeric" }, "month")
+              : this.num(dt.month);
+          case "MM":
+            // like 01
+            return useDateTimeFormatter
+              ? string({ month: "2-digit" }, "month")
+              : this.num(dt.month, 2);
+          case "MMM":
+            // like Jan
+            return month("short", false);
+          case "MMMM":
+            // like January
+            return month("long", false);
+          case "MMMMM":
+            // like J
+            return month("narrow", false);
+          // years
+          case "y":
+            // like 2014
+            return useDateTimeFormatter ? string({ year: "numeric" }, "year") : this.num(dt.year);
+          case "yy":
+            // like 14
+            return useDateTimeFormatter
+              ? string({ year: "2-digit" }, "year")
+              : this.num(dt.year.toString().slice(-2), 2);
+          case "yyyy":
+            // like 0012
+            return useDateTimeFormatter
+              ? string({ year: "numeric" }, "year")
+              : this.num(dt.year, 4);
+          case "yyyyyy":
+            // like 000012
+            return useDateTimeFormatter
+              ? string({ year: "numeric" }, "year")
+              : this.num(dt.year, 6);
+          // eras
+          case "G":
+            // like AD
+            return era("short");
+          case "GG":
+            // like Anno Domini
+            return era("long");
+          case "GGGGG":
+            return era("narrow");
+          case "kk":
+            return this.num(dt.weekYear.toString().slice(-2), 2);
+          case "kkkk":
+            return this.num(dt.weekYear, 4);
+          case "W":
+            return this.num(dt.weekNumber);
+          case "WW":
+            return this.num(dt.weekNumber, 2);
+          case "o":
+            return this.num(dt.ordinal);
+          case "ooo":
+            return this.num(dt.ordinal, 3);
+          case "q":
+            // like 1
+            return this.num(dt.quarter);
+          case "qq":
+            // like 01
+            return this.num(dt.quarter, 2);
+          case "X":
+            return this.num(Math.floor(dt.ts / 1000));
+          case "x":
+            return this.num(dt.ts);
+          default:
+            return maybeMacro(token);
+        }
+      };
+
+    return stringifyTokens(Formatter.parseFormat(fmt), tokenToString);
+  }
+
+  formatDurationFromString(dur, fmt) {
+    const tokenToField = token => {
+        switch (token[0]) {
+          case "S":
+            return "millisecond";
+          case "s":
+            return "second";
+          case "m":
+            return "minute";
+          case "h":
+            return "hour";
+          case "d":
+            return "day";
+          case "M":
+            return "month";
+          case "y":
+            return "year";
+          default:
+            return null;
+        }
+      },
+      tokenToString = lildur => token => {
+        const mapped = tokenToField(token);
+        if (mapped) {
+          return this.num(lildur.get(mapped), token.length);
+        } else {
+          return token;
+        }
+      },
+      tokens = Formatter.parseFormat(fmt),
+      realTokens = tokens.reduce(
+        (found, { literal, val }) => (literal ? found : found.concat(val)),
+        []
+      ),
+      collapsed = dur.shiftTo(...realTokens.map(tokenToField).filter(t => t));
+    return stringifyTokens(tokens, tokenToString(collapsed));
+  }
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/invalid.js b/npm_assets/node_modules/luxon/src/impl/invalid.js
new file mode 100644
index 0000000..2a2c95b
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/invalid.js
@@ -0,0 +1,14 @@
+export default class Invalid {
+  constructor(reason, explanation) {
+    this.reason = reason;
+    this.explanation = explanation;
+  }
+
+  toMessage() {
+    if (this.explanation) {
+      return `${this.reason}: ${this.explanation}`;
+    } else {
+      return this.reason;
+    }
+  }
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/locale.js b/npm_assets/node_modules/luxon/src/impl/locale.js
new file mode 100644
index 0000000..0f797b1
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/locale.js
@@ -0,0 +1,469 @@
+import { hasFormatToParts, hasIntl, padStart, roundTo, hasRelative } from "./util.js";
+import * as English from "./english.js";
+import Settings from "../settings.js";
+import DateTime from "../datetime.js";
+import Formatter from "./formatter.js";
+
+let intlDTCache = {};
+function getCachedDTF(locString, opts = {}) {
+  const key = JSON.stringify([locString, opts]);
+  let dtf = intlDTCache[key];
+  if (!dtf) {
+    dtf = new Intl.DateTimeFormat(locString, opts);
+    intlDTCache[key] = dtf;
+  }
+  return dtf;
+}
+
+let intlNumCache = {};
+function getCachedINF(locString, opts = {}) {
+  const key = JSON.stringify([locString, opts]);
+  let inf = intlNumCache[key];
+  if (!inf) {
+    inf = new Intl.NumberFormat(locString, opts);
+    intlNumCache[key] = inf;
+  }
+  return inf;
+}
+
+let intlRelCache = {};
+function getCachedRTF(locString, opts = {}) {
+  const { base, ...cacheKeyOpts } = opts; // exclude `base` from the options
+  const key = JSON.stringify([locString, cacheKeyOpts]);
+  let inf = intlRelCache[key];
+  if (!inf) {
+    inf = new Intl.RelativeTimeFormat(locString, opts);
+    intlRelCache[key] = inf;
+  }
+  return inf;
+}
+
+let sysLocaleCache = null;
+function systemLocale() {
+  if (sysLocaleCache) {
+    return sysLocaleCache;
+  } else if (hasIntl()) {
+    const computedSys = new Intl.DateTimeFormat().resolvedOptions().locale;
+    // node sometimes defaults to "und". Override that because that is dumb
+    sysLocaleCache = !computedSys || computedSys === "und" ? "en-US" : computedSys;
+    return sysLocaleCache;
+  } else {
+    sysLocaleCache = "en-US";
+    return sysLocaleCache;
+  }
+}
+
+function parseLocaleString(localeStr) {
+  // I really want to avoid writing a BCP 47 parser
+  // see, e.g. https://github.com/wooorm/bcp-47
+  // Instead, we'll do this:
+
+  // a) if the string has no -u extensions, just leave it alone
+  // b) if it does, use Intl to resolve everything
+  // c) if Intl fails, try again without the -u
+
+  const uIndex = localeStr.indexOf("-u-");
+  if (uIndex === -1) {
+    return [localeStr];
+  } else {
+    let options;
+    const smaller = localeStr.substring(0, uIndex);
+    try {
+      options = getCachedDTF(localeStr).resolvedOptions();
+    } catch (e) {
+      options = getCachedDTF(smaller).resolvedOptions();
+    }
+
+    const { numberingSystem, calendar } = options;
+    // return the smaller one so that we can append the calendar and numbering overrides to it
+    return [smaller, numberingSystem, calendar];
+  }
+}
+
+function intlConfigString(localeStr, numberingSystem, outputCalendar) {
+  if (hasIntl()) {
+    if (outputCalendar || numberingSystem) {
+      localeStr += "-u";
+
+      if (outputCalendar) {
+        localeStr += `-ca-${outputCalendar}`;
+      }
+
+      if (numberingSystem) {
+        localeStr += `-nu-${numberingSystem}`;
+      }
+      return localeStr;
+    } else {
+      return localeStr;
+    }
+  } else {
+    return [];
+  }
+}
+
+function mapMonths(f) {
+  const ms = [];
+  for (let i = 1; i <= 12; i++) {
+    const dt = DateTime.utc(2016, i, 1);
+    ms.push(f(dt));
+  }
+  return ms;
+}
+
+function mapWeekdays(f) {
+  const ms = [];
+  for (let i = 1; i <= 7; i++) {
+    const dt = DateTime.utc(2016, 11, 13 + i);
+    ms.push(f(dt));
+  }
+  return ms;
+}
+
+function listStuff(loc, length, defaultOK, englishFn, intlFn) {
+  const mode = loc.listingMode(defaultOK);
+
+  if (mode === "error") {
+    return null;
+  } else if (mode === "en") {
+    return englishFn(length);
+  } else {
+    return intlFn(length);
+  }
+}
+
+function supportsFastNumbers(loc) {
+  if (loc.numberingSystem && loc.numberingSystem !== "latn") {
+    return false;
+  } else {
+    return (
+      loc.numberingSystem === "latn" ||
+      !loc.locale ||
+      loc.locale.startsWith("en") ||
+      (hasIntl() && new Intl.DateTimeFormat(loc.intl).resolvedOptions().numberingSystem === "latn")
+    );
+  }
+}
+
+/**
+ * @private
+ */
+
+class PolyNumberFormatter {
+  constructor(intl, forceSimple, opts) {
+    this.padTo = opts.padTo || 0;
+    this.floor = opts.floor || false;
+
+    if (!forceSimple && hasIntl()) {
+      const intlOpts = { useGrouping: false };
+      if (opts.padTo > 0) intlOpts.minimumIntegerDigits = opts.padTo;
+      this.inf = getCachedINF(intl, intlOpts);
+    }
+  }
+
+  format(i) {
+    if (this.inf) {
+      const fixed = this.floor ? Math.floor(i) : i;
+      return this.inf.format(fixed);
+    } else {
+      // to match the browser's numberformatter defaults
+      const fixed = this.floor ? Math.floor(i) : roundTo(i, 3);
+      return padStart(fixed, this.padTo);
+    }
+  }
+}
+
+/**
+ * @private
+ */
+
+class PolyDateFormatter {
+  constructor(dt, intl, opts) {
+    this.opts = opts;
+    this.hasIntl = hasIntl();
+
+    let z;
+    if (dt.zone.universal && this.hasIntl) {
+      // Chromium doesn't support fixed-offset zones like Etc/GMT+8 in its formatter,
+      // See https://bugs.chromium.org/p/chromium/issues/detail?id=364374.
+      // So we have to make do. Two cases:
+      // 1. The format options tell us to show the zone. We can't do that, so the best
+      // we can do is format the date in UTC.
+      // 2. The format options don't tell us to show the zone. Then we can adjust them
+      // the time and tell the formatter to show it to us in UTC, so that the time is right
+      // and the bad zone doesn't show up.
+      // We can clean all this up when Chrome fixes this.
+      z = "UTC";
+      if (opts.timeZoneName) {
+        this.dt = dt;
+      } else {
+        this.dt = dt.offset === 0 ? dt : DateTime.fromMillis(dt.ts + dt.offset * 60 * 1000);
+      }
+    } else if (dt.zone.type === "local") {
+      this.dt = dt;
+    } else {
+      this.dt = dt;
+      z = dt.zone.name;
+    }
+
+    if (this.hasIntl) {
+      const intlOpts = Object.assign({}, this.opts);
+      if (z) {
+        intlOpts.timeZone = z;
+      }
+      this.dtf = getCachedDTF(intl, intlOpts);
+    }
+  }
+
+  format() {
+    if (this.hasIntl) {
+      return this.dtf.format(this.dt.toJSDate());
+    } else {
+      const tokenFormat = English.formatString(this.opts),
+        loc = Locale.create("en-US");
+      return Formatter.create(loc).formatDateTimeFromString(this.dt, tokenFormat);
+    }
+  }
+
+  formatToParts() {
+    if (this.hasIntl && hasFormatToParts()) {
+      return this.dtf.formatToParts(this.dt.toJSDate());
+    } else {
+      // This is kind of a cop out. We actually could do this for English. However, we couldn't do it for intl strings
+      // and IMO it's too weird to have an uncanny valley like that
+      return [];
+    }
+  }
+
+  resolvedOptions() {
+    if (this.hasIntl) {
+      return this.dtf.resolvedOptions();
+    } else {
+      return {
+        locale: "en-US",
+        numberingSystem: "latn",
+        outputCalendar: "gregory"
+      };
+    }
+  }
+}
+
+/**
+ * @private
+ */
+class PolyRelFormatter {
+  constructor(intl, isEnglish, opts) {
+    this.opts = Object.assign({ style: "long" }, opts);
+    if (!isEnglish && hasRelative()) {
+      this.rtf = getCachedRTF(intl, opts);
+    }
+  }
+
+  format(count, unit) {
+    if (this.rtf) {
+      return this.rtf.format(count, unit);
+    } else {
+      return English.formatRelativeTime(unit, count, this.opts.numeric, this.opts.style !== "long");
+    }
+  }
+
+  formatToParts(count, unit) {
+    if (this.rtf) {
+      return this.rtf.formatToParts(count, unit);
+    } else {
+      return [];
+    }
+  }
+}
+
+/**
+ * @private
+ */
+
+export default class Locale {
+  static fromOpts(opts) {
+    return Locale.create(opts.locale, opts.numberingSystem, opts.outputCalendar, opts.defaultToEN);
+  }
+
+  static create(locale, numberingSystem, outputCalendar, defaultToEN = false) {
+    const specifiedLocale = locale || Settings.defaultLocale,
+      // the system locale is useful for human readable strings but annoying for parsing/formatting known formats
+      localeR = specifiedLocale || (defaultToEN ? "en-US" : systemLocale()),
+      numberingSystemR = numberingSystem || Settings.defaultNumberingSystem,
+      outputCalendarR = outputCalendar || Settings.defaultOutputCalendar;
+    return new Locale(localeR, numberingSystemR, outputCalendarR, specifiedLocale);
+  }
+
+  static resetCache() {
+    sysLocaleCache = null;
+    intlDTCache = {};
+    intlNumCache = {};
+    intlRelCache = {};
+  }
+
+  static fromObject({ locale, numberingSystem, outputCalendar } = {}) {
+    return Locale.create(locale, numberingSystem, outputCalendar);
+  }
+
+  constructor(locale, numbering, outputCalendar, specifiedLocale) {
+    const [parsedLocale, parsedNumberingSystem, parsedOutputCalendar] = parseLocaleString(locale);
+
+    this.locale = parsedLocale;
+    this.numberingSystem = numbering || parsedNumberingSystem || null;
+    this.outputCalendar = outputCalendar || parsedOutputCalendar || null;
+    this.intl = intlConfigString(this.locale, this.numberingSystem, this.outputCalendar);
+
+    this.weekdaysCache = { format: {}, standalone: {} };
+    this.monthsCache = { format: {}, standalone: {} };
+    this.meridiemCache = null;
+    this.eraCache = {};
+
+    this.specifiedLocale = specifiedLocale;
+    this.fastNumbersCached = null;
+  }
+
+  get fastNumbers() {
+    if (this.fastNumbersCached == null) {
+      this.fastNumbersCached = supportsFastNumbers(this);
+    }
+
+    return this.fastNumbersCached;
+  }
+
+  listingMode(defaultOK = true) {
+    const intl = hasIntl(),
+      hasFTP = intl && hasFormatToParts(),
+      isActuallyEn = this.isEnglish(),
+      hasNoWeirdness =
+        (this.numberingSystem === null || this.numberingSystem === "latn") &&
+        (this.outputCalendar === null || this.outputCalendar === "gregory");
+
+    if (!hasFTP && !(isActuallyEn && hasNoWeirdness) && !defaultOK) {
+      return "error";
+    } else if (!hasFTP || (isActuallyEn && hasNoWeirdness)) {
+      return "en";
+    } else {
+      return "intl";
+    }
+  }
+
+  clone(alts) {
+    if (!alts || Object.getOwnPropertyNames(alts).length === 0) {
+      return this;
+    } else {
+      return Locale.create(
+        alts.locale || this.specifiedLocale,
+        alts.numberingSystem || this.numberingSystem,
+        alts.outputCalendar || this.outputCalendar,
+        alts.defaultToEN || false
+      );
+    }
+  }
+
+  redefaultToEN(alts = {}) {
+    return this.clone(Object.assign({}, alts, { defaultToEN: true }));
+  }
+
+  redefaultToSystem(alts = {}) {
+    return this.clone(Object.assign({}, alts, { defaultToEN: false }));
+  }
+
+  months(length, format = false, defaultOK = true) {
+    return listStuff(this, length, defaultOK, English.months, () => {
+      const intl = format ? { month: length, day: "numeric" } : { month: length },
+        formatStr = format ? "format" : "standalone";
+      if (!this.monthsCache[formatStr][length]) {
+        this.monthsCache[formatStr][length] = mapMonths(dt => this.extract(dt, intl, "month"));
+      }
+      return this.monthsCache[formatStr][length];
+    });
+  }
+
+  weekdays(length, format = false, defaultOK = true) {
+    return listStuff(this, length, defaultOK, English.weekdays, () => {
+      const intl = format
+          ? { weekday: length, year: "numeric", month: "long", day: "numeric" }
+          : { weekday: length },
+        formatStr = format ? "format" : "standalone";
+      if (!this.weekdaysCache[formatStr][length]) {
+        this.weekdaysCache[formatStr][length] = mapWeekdays(dt =>
+          this.extract(dt, intl, "weekday")
+        );
+      }
+      return this.weekdaysCache[formatStr][length];
+    });
+  }
+
+  meridiems(defaultOK = true) {
+    return listStuff(
+      this,
+      undefined,
+      defaultOK,
+      () => English.meridiems,
+      () => {
+        // In theory there could be aribitrary day periods. We're gonna assume there are exactly two
+        // for AM and PM. This is probably wrong, but it's makes parsing way easier.
+        if (!this.meridiemCache) {
+          const intl = { hour: "numeric", hour12: true };
+          this.meridiemCache = [DateTime.utc(2016, 11, 13, 9), DateTime.utc(2016, 11, 13, 19)].map(
+            dt => this.extract(dt, intl, "dayperiod")
+          );
+        }
+
+        return this.meridiemCache;
+      }
+    );
+  }
+
+  eras(length, defaultOK = true) {
+    return listStuff(this, length, defaultOK, English.eras, () => {
+      const intl = { era: length };
+
+      // This is utter bullshit. Different calendars are going to define eras totally differently. What I need is the minimum set of dates
+      // to definitely enumerate them.
+      if (!this.eraCache[length]) {
+        this.eraCache[length] = [DateTime.utc(-40, 1, 1), DateTime.utc(2017, 1, 1)].map(dt =>
+          this.extract(dt, intl, "era")
+        );
+      }
+
+      return this.eraCache[length];
+    });
+  }
+
+  extract(dt, intlOpts, field) {
+    const df = this.dtFormatter(dt, intlOpts),
+      results = df.formatToParts(),
+      matching = results.find(m => m.type.toLowerCase() === field);
+    return matching ? matching.value : null;
+  }
+
+  numberFormatter(opts = {}) {
+    // this forcesimple option is never used (the only caller short-circuits on it, but it seems safer to leave)
+    // (in contrast, the rest of the condition is used heavily)
+    return new PolyNumberFormatter(this.intl, opts.forceSimple || this.fastNumbers, opts);
+  }
+
+  dtFormatter(dt, intlOpts = {}) {
+    return new PolyDateFormatter(dt, this.intl, intlOpts);
+  }
+
+  relFormatter(opts = {}) {
+    return new PolyRelFormatter(this.intl, this.isEnglish(), opts);
+  }
+
+  isEnglish() {
+    return (
+      this.locale === "en" ||
+      this.locale.toLowerCase() === "en-us" ||
+      (hasIntl() && new Intl.DateTimeFormat(this.intl).resolvedOptions().locale.startsWith("en-us"))
+    );
+  }
+
+  equals(other) {
+    return (
+      this.locale === other.locale &&
+      this.numberingSystem === other.numberingSystem &&
+      this.outputCalendar === other.outputCalendar
+    );
+  }
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/regexParser.js b/npm_assets/node_modules/luxon/src/impl/regexParser.js
new file mode 100644
index 0000000..74ba737
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/regexParser.js
@@ -0,0 +1,319 @@
+import {
+  untruncateYear,
+  signedOffset,
+  parseInteger,
+  parseMillis,
+  ianaRegex,
+  isUndefined
+} from "./util.js";
+import * as English from "./english.js";
+import FixedOffsetZone from "../zones/fixedOffsetZone.js";
+import IANAZone from "../zones/IANAZone.js";
+
+/*
+ * This file handles parsing for well-specified formats. Here's how it works:
+ * Two things go into parsing: a regex to match with and an extractor to take apart the groups in the match.
+ * An extractor is just a function that takes a regex match array and returns a { year: ..., month: ... } object
+ * parse() does the work of executing the regex and applying the extractor. It takes multiple regex/extractor pairs to try in sequence.
+ * Extractors can take a "cursor" representing the offset in the match to look at. This makes it easy to combine extractors.
+ * combineExtractors() does the work of combining them, keeping track of the cursor through multiple extractions.
+ * Some extractions are super dumb and simpleParse and fromStrings help DRY them.
+ */
+
+function combineRegexes(...regexes) {
+  const full = regexes.reduce((f, r) => f + r.source, "");
+  return RegExp(`^${full}$`);
+}
+
+function combineExtractors(...extractors) {
+  return m =>
+    extractors
+      .reduce(
+        ([mergedVals, mergedZone, cursor], ex) => {
+          const [val, zone, next] = ex(m, cursor);
+          return [Object.assign(mergedVals, val), mergedZone || zone, next];
+        },
+        [{}, null, 1]
+      )
+      .slice(0, 2);
+}
+
+function parse(s, ...patterns) {
+  if (s == null) {
+    return [null, null];
+  }
+
+  for (const [regex, extractor] of patterns) {
+    const m = regex.exec(s);
+    if (m) {
+      return extractor(m);
+    }
+  }
+  return [null, null];
+}
+
+function simpleParse(...keys) {
+  return (match, cursor) => {
+    const ret = {};
+    let i;
+
+    for (i = 0; i < keys.length; i++) {
+      ret[keys[i]] = parseInteger(match[cursor + i]);
+    }
+    return [ret, null, cursor + i];
+  };
+}
+
+// ISO and SQL parsing
+const offsetRegex = /(?:(Z)|([+-]\d\d)(?::?(\d\d))?)/,
+  isoTimeBaseRegex = /(\d\d)(?::?(\d\d)(?::?(\d\d)(?:[.,](\d{1,30}))?)?)?/,
+  isoTimeRegex = RegExp(`${isoTimeBaseRegex.source}${offsetRegex.source}?`),
+  isoTimeExtensionRegex = RegExp(`(?:T${isoTimeRegex.source})?`),
+  isoYmdRegex = /([+-]\d{6}|\d{4})(?:-?(\d\d)(?:-?(\d\d))?)?/,
+  isoWeekRegex = /(\d{4})-?W(\d\d)(?:-?(\d))?/,
+  isoOrdinalRegex = /(\d{4})-?(\d{3})/,
+  extractISOWeekData = simpleParse("weekYear", "weekNumber", "weekDay"),
+  extractISOOrdinalData = simpleParse("year", "ordinal"),
+  sqlYmdRegex = /(\d{4})-(\d\d)-(\d\d)/, // dumbed-down version of the ISO one
+  sqlTimeRegex = RegExp(
+    `${isoTimeBaseRegex.source} ?(?:${offsetRegex.source}|(${ianaRegex.source}))?`
+  ),
+  sqlTimeExtensionRegex = RegExp(`(?: ${sqlTimeRegex.source})?`);
+
+function int(match, pos, fallback) {
+  const m = match[pos];
+  return isUndefined(m) ? fallback : parseInteger(m);
+}
+
+function extractISOYmd(match, cursor) {
+  const item = {
+    year: int(match, cursor),
+    month: int(match, cursor + 1, 1),
+    day: int(match, cursor + 2, 1)
+  };
+
+  return [item, null, cursor + 3];
+}
+
+function extractISOTime(match, cursor) {
+  const item = {
+    hour: int(match, cursor, 0),
+    minute: int(match, cursor + 1, 0),
+    second: int(match, cursor + 2, 0),
+    millisecond: parseMillis(match[cursor + 3])
+  };
+
+  return [item, null, cursor + 4];
+}
+
+function extractISOOffset(match, cursor) {
+  const local = !match[cursor] && !match[cursor + 1],
+    fullOffset = signedOffset(match[cursor + 1], match[cursor + 2]),
+    zone = local ? null : FixedOffsetZone.instance(fullOffset);
+  return [{}, zone, cursor + 3];
+}
+
+function extractIANAZone(match, cursor) {
+  const zone = match[cursor] ? IANAZone.create(match[cursor]) : null;
+  return [{}, zone, cursor + 1];
+}
+
+// ISO duration parsing
+
+const isoDuration = /^-?P(?:(?:(-?\d{1,9})Y)?(?:(-?\d{1,9})M)?(?:(-?\d{1,9})W)?(?:(-?\d{1,9})D)?(?:T(?:(-?\d{1,9})H)?(?:(-?\d{1,9})M)?(?:(-?\d{1,20})(?:[.,](-?\d{1,9}))?S)?)?)$/;
+
+function extractISODuration(match) {
+  const [
+    s,
+    yearStr,
+    monthStr,
+    weekStr,
+    dayStr,
+    hourStr,
+    minuteStr,
+    secondStr,
+    millisecondsStr
+  ] = match;
+
+  const hasNegativePrefix = s[0] === "-";
+
+  const maybeNegate = num => (num && hasNegativePrefix ? -num : num);
+
+  return [
+    {
+      years: maybeNegate(parseInteger(yearStr)),
+      months: maybeNegate(parseInteger(monthStr)),
+      weeks: maybeNegate(parseInteger(weekStr)),
+      days: maybeNegate(parseInteger(dayStr)),
+      hours: maybeNegate(parseInteger(hourStr)),
+      minutes: maybeNegate(parseInteger(minuteStr)),
+      seconds: maybeNegate(parseInteger(secondStr)),
+      milliseconds: maybeNegate(parseMillis(millisecondsStr))
+    }
+  ];
+}
+
+// These are a little braindead. EDT *should* tell us that we're in, say, America/New_York
+// and not just that we're in -240 *right now*. But since I don't think these are used that often
+// I'm just going to ignore that
+const obsOffsets = {
+  GMT: 0,
+  EDT: -4 * 60,
+  EST: -5 * 60,
+  CDT: -5 * 60,
+  CST: -6 * 60,
+  MDT: -6 * 60,
+  MST: -7 * 60,
+  PDT: -7 * 60,
+  PST: -8 * 60
+};
+
+function fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr) {
+  const result = {
+    year: yearStr.length === 2 ? untruncateYear(parseInteger(yearStr)) : parseInteger(yearStr),
+    month: English.monthsShort.indexOf(monthStr) + 1,
+    day: parseInteger(dayStr),
+    hour: parseInteger(hourStr),
+    minute: parseInteger(minuteStr)
+  };
+
+  if (secondStr) result.second = parseInteger(secondStr);
+  if (weekdayStr) {
+    result.weekday =
+      weekdayStr.length > 3
+        ? English.weekdaysLong.indexOf(weekdayStr) + 1
+        : English.weekdaysShort.indexOf(weekdayStr) + 1;
+  }
+
+  return result;
+}
+
+// RFC 2822/5322
+const rfc2822 = /^(?:(Mon|Tue|Wed|Thu|Fri|Sat|Sun),\s)?(\d{1,2})\s(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s(\d{2,4})\s(\d\d):(\d\d)(?::(\d\d))?\s(?:(UT|GMT|[ECMP][SD]T)|([Zz])|(?:([+-]\d\d)(\d\d)))$/;
+
+function extractRFC2822(match) {
+  const [
+      ,
+      weekdayStr,
+      dayStr,
+      monthStr,
+      yearStr,
+      hourStr,
+      minuteStr,
+      secondStr,
+      obsOffset,
+      milOffset,
+      offHourStr,
+      offMinuteStr
+    ] = match,
+    result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);
+
+  let offset;
+  if (obsOffset) {
+    offset = obsOffsets[obsOffset];
+  } else if (milOffset) {
+    offset = 0;
+  } else {
+    offset = signedOffset(offHourStr, offMinuteStr);
+  }
+
+  return [result, new FixedOffsetZone(offset)];
+}
+
+function preprocessRFC2822(s) {
+  // Remove comments and folding whitespace and replace multiple-spaces with a single space
+  return s
+    .replace(/\([^)]*\)|[\n\t]/g, " ")
+    .replace(/(\s\s+)/g, " ")
+    .trim();
+}
+
+// http date
+
+const rfc1123 = /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun), (\d\d) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) (\d{4}) (\d\d):(\d\d):(\d\d) GMT$/,
+  rfc850 = /^(Monday|Tuesday|Wedsday|Thursday|Friday|Saturday|Sunday), (\d\d)-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(\d\d) (\d\d):(\d\d):(\d\d) GMT$/,
+  ascii = /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) ( \d|\d\d) (\d\d):(\d\d):(\d\d) (\d{4})$/;
+
+function extractRFC1123Or850(match) {
+  const [, weekdayStr, dayStr, monthStr, yearStr, hourStr, minuteStr, secondStr] = match,
+    result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);
+  return [result, FixedOffsetZone.utcInstance];
+}
+
+function extractASCII(match) {
+  const [, weekdayStr, monthStr, dayStr, hourStr, minuteStr, secondStr, yearStr] = match,
+    result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);
+  return [result, FixedOffsetZone.utcInstance];
+}
+
+const isoYmdWithTimeExtensionRegex = combineRegexes(isoYmdRegex, isoTimeExtensionRegex);
+const isoWeekWithTimeExtensionRegex = combineRegexes(isoWeekRegex, isoTimeExtensionRegex);
+const isoOrdinalWithTimeExtensionRegex = combineRegexes(isoOrdinalRegex, isoTimeExtensionRegex);
+const isoTimeCombinedRegex = combineRegexes(isoTimeRegex);
+
+const extractISOYmdTimeAndOffset = combineExtractors(
+  extractISOYmd,
+  extractISOTime,
+  extractISOOffset
+);
+const extractISOWeekTimeAndOffset = combineExtractors(
+  extractISOWeekData,
+  extractISOTime,
+  extractISOOffset
+);
+const extractISOOrdinalDataAndTime = combineExtractors(extractISOOrdinalData, extractISOTime);
+const extractISOTimeAndOffset = combineExtractors(extractISOTime, extractISOOffset);
+
+/**
+ * @private
+ */
+
+export function parseISODate(s) {
+  return parse(
+    s,
+    [isoYmdWithTimeExtensionRegex, extractISOYmdTimeAndOffset],
+    [isoWeekWithTimeExtensionRegex, extractISOWeekTimeAndOffset],
+    [isoOrdinalWithTimeExtensionRegex, extractISOOrdinalDataAndTime],
+    [isoTimeCombinedRegex, extractISOTimeAndOffset]
+  );
+}
+
+export function parseRFC2822Date(s) {
+  return parse(preprocessRFC2822(s), [rfc2822, extractRFC2822]);
+}
+
+export function parseHTTPDate(s) {
+  return parse(
+    s,
+    [rfc1123, extractRFC1123Or850],
+    [rfc850, extractRFC1123Or850],
+    [ascii, extractASCII]
+  );
+}
+
+export function parseISODuration(s) {
+  return parse(s, [isoDuration, extractISODuration]);
+}
+
+const sqlYmdWithTimeExtensionRegex = combineRegexes(sqlYmdRegex, sqlTimeExtensionRegex);
+const sqlTimeCombinedRegex = combineRegexes(sqlTimeRegex);
+
+const extractISOYmdTimeOffsetAndIANAZone = combineExtractors(
+  extractISOYmd,
+  extractISOTime,
+  extractISOOffset,
+  extractIANAZone
+);
+const extractISOTimeOffsetAndIANAZone = combineExtractors(
+  extractISOTime,
+  extractISOOffset,
+  extractIANAZone
+);
+
+export function parseSQL(s) {
+  return parse(
+    s,
+    [sqlYmdWithTimeExtensionRegex, extractISOYmdTimeOffsetAndIANAZone],
+    [sqlTimeCombinedRegex, extractISOTimeOffsetAndIANAZone]
+  );
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/tokenParser.js b/npm_assets/node_modules/luxon/src/impl/tokenParser.js
new file mode 100644
index 0000000..4ca0401
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/tokenParser.js
@@ -0,0 +1,424 @@
+import { parseMillis, isUndefined, untruncateYear, signedOffset, hasOwnProperty } from "./util.js";
+import Formatter from "./formatter.js";
+import FixedOffsetZone from "../zones/fixedOffsetZone.js";
+import IANAZone from "../zones/IANAZone.js";
+import DateTime from "../datetime.js";
+import { digitRegex, parseDigits } from "./digits.js";
+import { ConflictingSpecificationError } from "../errors.js";
+
+const MISSING_FTP = "missing Intl.DateTimeFormat.formatToParts support";
+
+function intUnit(regex, post = i => i) {
+  return { regex, deser: ([s]) => post(parseDigits(s)) };
+}
+
+const NBSP = String.fromCharCode(160);
+const spaceOrNBSP = `( |${NBSP})`;
+const spaceOrNBSPRegExp = new RegExp(spaceOrNBSP, "g");
+
+function fixListRegex(s) {
+  // make dots optional and also make them literal
+  // make space and non breakable space characters interchangeable
+  return s.replace(/\./g, "\\.?").replace(spaceOrNBSPRegExp, spaceOrNBSP);
+}
+
+function stripInsensitivities(s) {
+  return s
+    .replace(/\./g, "") // ignore dots that were made optional
+    .replace(spaceOrNBSPRegExp, " ") // interchange space and nbsp
+    .toLowerCase();
+}
+
+function oneOf(strings, startIndex) {
+  if (strings === null) {
+    return null;
+  } else {
+    return {
+      regex: RegExp(strings.map(fixListRegex).join("|")),
+      deser: ([s]) =>
+        strings.findIndex(i => stripInsensitivities(s) === stripInsensitivities(i)) + startIndex
+    };
+  }
+}
+
+function offset(regex, groups) {
+  return { regex, deser: ([, h, m]) => signedOffset(h, m), groups };
+}
+
+function simple(regex) {
+  return { regex, deser: ([s]) => s };
+}
+
+function escapeToken(value) {
+  // eslint-disable-next-line no-useless-escape
+  return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
+}
+
+function unitForToken(token, loc) {
+  const one = digitRegex(loc),
+    two = digitRegex(loc, "{2}"),
+    three = digitRegex(loc, "{3}"),
+    four = digitRegex(loc, "{4}"),
+    six = digitRegex(loc, "{6}"),
+    oneOrTwo = digitRegex(loc, "{1,2}"),
+    oneToThree = digitRegex(loc, "{1,3}"),
+    oneToSix = digitRegex(loc, "{1,6}"),
+    oneToNine = digitRegex(loc, "{1,9}"),
+    twoToFour = digitRegex(loc, "{2,4}"),
+    fourToSix = digitRegex(loc, "{4,6}"),
+    literal = t => ({ regex: RegExp(escapeToken(t.val)), deser: ([s]) => s, literal: true }),
+    unitate = t => {
+      if (token.literal) {
+        return literal(t);
+      }
+      switch (t.val) {
+        // era
+        case "G":
+          return oneOf(loc.eras("short", false), 0);
+        case "GG":
+          return oneOf(loc.eras("long", false), 0);
+        // years
+        case "y":
+          return intUnit(oneToSix);
+        case "yy":
+          return intUnit(twoToFour, untruncateYear);
+        case "yyyy":
+          return intUnit(four);
+        case "yyyyy":
+          return intUnit(fourToSix);
+        case "yyyyyy":
+          return intUnit(six);
+        // months
+        case "M":
+          return intUnit(oneOrTwo);
+        case "MM":
+          return intUnit(two);
+        case "MMM":
+          return oneOf(loc.months("short", true, false), 1);
+        case "MMMM":
+          return oneOf(loc.months("long", true, false), 1);
+        case "L":
+          return intUnit(oneOrTwo);
+        case "LL":
+          return intUnit(two);
+        case "LLL":
+          return oneOf(loc.months("short", false, false), 1);
+        case "LLLL":
+          return oneOf(loc.months("long", false, false), 1);
+        // dates
+        case "d":
+          return intUnit(oneOrTwo);
+        case "dd":
+          return intUnit(two);
+        // ordinals
+        case "o":
+          return intUnit(oneToThree);
+        case "ooo":
+          return intUnit(three);
+        // time
+        case "HH":
+          return intUnit(two);
+        case "H":
+          return intUnit(oneOrTwo);
+        case "hh":
+          return intUnit(two);
+        case "h":
+          return intUnit(oneOrTwo);
+        case "mm":
+          return intUnit(two);
+        case "m":
+          return intUnit(oneOrTwo);
+        case "q":
+          return intUnit(oneOrTwo);
+        case "qq":
+          return intUnit(two);
+        case "s":
+          return intUnit(oneOrTwo);
+        case "ss":
+          return intUnit(two);
+        case "S":
+          return intUnit(oneToThree);
+        case "SSS":
+          return intUnit(three);
+        case "u":
+          return simple(oneToNine);
+        // meridiem
+        case "a":
+          return oneOf(loc.meridiems(), 0);
+        // weekYear (k)
+        case "kkkk":
+          return intUnit(four);
+        case "kk":
+          return intUnit(twoToFour, untruncateYear);
+        // weekNumber (W)
+        case "W":
+          return intUnit(oneOrTwo);
+        case "WW":
+          return intUnit(two);
+        // weekdays
+        case "E":
+        case "c":
+          return intUnit(one);
+        case "EEE":
+          return oneOf(loc.weekdays("short", false, false), 1);
+        case "EEEE":
+          return oneOf(loc.weekdays("long", false, false), 1);
+        case "ccc":
+          return oneOf(loc.weekdays("short", true, false), 1);
+        case "cccc":
+          return oneOf(loc.weekdays("long", true, false), 1);
+        // offset/zone
+        case "Z":
+        case "ZZ":
+          return offset(new RegExp(`([+-]${oneOrTwo.source})(?::(${two.source}))?`), 2);
+        case "ZZZ":
+          return offset(new RegExp(`([+-]${oneOrTwo.source})(${two.source})?`), 2);
+        // we don't support ZZZZ (PST) or ZZZZZ (Pacific Standard Time) in parsing
+        // because we don't have any way to figure out what they are
+        case "z":
+          return simple(/[a-z_+-/]{1,256}?/i);
+        default:
+          return literal(t);
+      }
+    };
+
+  const unit = unitate(token) || {
+    invalidReason: MISSING_FTP
+  };
+
+  unit.token = token;
+
+  return unit;
+}
+
+const partTypeStyleToTokenVal = {
+  year: {
+    "2-digit": "yy",
+    numeric: "yyyyy"
+  },
+  month: {
+    numeric: "M",
+    "2-digit": "MM",
+    short: "MMM",
+    long: "MMMM"
+  },
+  day: {
+    numeric: "d",
+    "2-digit": "dd"
+  },
+  weekday: {
+    short: "EEE",
+    long: "EEEE"
+  },
+  dayperiod: "a",
+  dayPeriod: "a",
+  hour: {
+    numeric: "h",
+    "2-digit": "hh"
+  },
+  minute: {
+    numeric: "m",
+    "2-digit": "mm"
+  },
+  second: {
+    numeric: "s",
+    "2-digit": "ss"
+  }
+};
+
+function tokenForPart(part, locale, formatOpts) {
+  const { type, value } = part;
+
+  if (type === "literal") {
+    return {
+      literal: true,
+      val: value
+    };
+  }
+
+  const style = formatOpts[type];
+
+  let val = partTypeStyleToTokenVal[type];
+  if (typeof val === "object") {
+    val = val[style];
+  }
+
+  if (val) {
+    return {
+      literal: false,
+      val
+    };
+  }
+
+  return undefined;
+}
+
+function buildRegex(units) {
+  const re = units.map(u => u.regex).reduce((f, r) => `${f}(${r.source})`, "");
+  return [`^${re}$`, units];
+}
+
+function match(input, regex, handlers) {
+  const matches = input.match(regex);
+
+  if (matches) {
+    const all = {};
+    let matchIndex = 1;
+    for (const i in handlers) {
+      if (hasOwnProperty(handlers, i)) {
+        const h = handlers[i],
+          groups = h.groups ? h.groups + 1 : 1;
+        if (!h.literal && h.token) {
+          all[h.token.val[0]] = h.deser(matches.slice(matchIndex, matchIndex + groups));
+        }
+        matchIndex += groups;
+      }
+    }
+    return [matches, all];
+  } else {
+    return [matches, {}];
+  }
+}
+
+function dateTimeFromMatches(matches) {
+  const toField = token => {
+    switch (token) {
+      case "S":
+        return "millisecond";
+      case "s":
+        return "second";
+      case "m":
+        return "minute";
+      case "h":
+      case "H":
+        return "hour";
+      case "d":
+        return "day";
+      case "o":
+        return "ordinal";
+      case "L":
+      case "M":
+        return "month";
+      case "y":
+        return "year";
+      case "E":
+      case "c":
+        return "weekday";
+      case "W":
+        return "weekNumber";
+      case "k":
+        return "weekYear";
+      case "q":
+        return "quarter";
+      default:
+        return null;
+    }
+  };
+
+  let zone;
+  if (!isUndefined(matches.Z)) {
+    zone = new FixedOffsetZone(matches.Z);
+  } else if (!isUndefined(matches.z)) {
+    zone = IANAZone.create(matches.z);
+  } else {
+    zone = null;
+  }
+
+  if (!isUndefined(matches.q)) {
+    matches.M = (matches.q - 1) * 3 + 1;
+  }
+
+  if (!isUndefined(matches.h)) {
+    if (matches.h < 12 && matches.a === 1) {
+      matches.h += 12;
+    } else if (matches.h === 12 && matches.a === 0) {
+      matches.h = 0;
+    }
+  }
+
+  if (matches.G === 0 && matches.y) {
+    matches.y = -matches.y;
+  }
+
+  if (!isUndefined(matches.u)) {
+    matches.S = parseMillis(matches.u);
+  }
+
+  const vals = Object.keys(matches).reduce((r, k) => {
+    const f = toField(k);
+    if (f) {
+      r[f] = matches[k];
+    }
+
+    return r;
+  }, {});
+
+  return [vals, zone];
+}
+
+let dummyDateTimeCache = null;
+
+function getDummyDateTime() {
+  if (!dummyDateTimeCache) {
+    dummyDateTimeCache = DateTime.fromMillis(1555555555555);
+  }
+
+  return dummyDateTimeCache;
+}
+
+function maybeExpandMacroToken(token, locale) {
+  if (token.literal) {
+    return token;
+  }
+
+  const formatOpts = Formatter.macroTokenToFormatOpts(token.val);
+
+  if (!formatOpts) {
+    return token;
+  }
+
+  const formatter = Formatter.create(locale, formatOpts);
+  const parts = formatter.formatDateTimeParts(getDummyDateTime());
+
+  const tokens = parts.map(p => tokenForPart(p, locale, formatOpts));
+
+  if (tokens.includes(undefined)) {
+    return token;
+  }
+
+  return tokens;
+}
+
+function expandMacroTokens(tokens, locale) {
+  return Array.prototype.concat(...tokens.map(t => maybeExpandMacroToken(t, locale)));
+}
+
+/**
+ * @private
+ */
+
+export function explainFromTokens(locale, input, format) {
+  const tokens = expandMacroTokens(Formatter.parseFormat(format), locale),
+    units = tokens.map(t => unitForToken(t, locale)),
+    disqualifyingUnit = units.find(t => t.invalidReason);
+
+  if (disqualifyingUnit) {
+    return { input, tokens, invalidReason: disqualifyingUnit.invalidReason };
+  } else {
+    const [regexString, handlers] = buildRegex(units),
+      regex = RegExp(regexString, "i"),
+      [rawMatches, matches] = match(input, regex, handlers),
+      [result, zone] = matches ? dateTimeFromMatches(matches) : [null, null];
+    if (hasOwnProperty(matches, "a") && hasOwnProperty(matches, "H")) {
+      throw new ConflictingSpecificationError(
+        "Can't include meridiem when specifying 24-hour format"
+      );
+    }
+    return { input, tokens, regex, rawMatches, matches, result, zone };
+  }
+}
+
+export function parseFromTokens(locale, input, format) {
+  const { result, zone, invalidReason } = explainFromTokens(locale, input, format);
+  return [result, zone, invalidReason];
+}
diff --git a/npm_assets/node_modules/luxon/src/impl/util.js b/npm_assets/node_modules/luxon/src/impl/util.js
new file mode 100644
index 0000000..b345c69
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/util.js
@@ -0,0 +1,286 @@
+/*
+  This is just a junk drawer, containing anything used across multiple classes.
+  Because Luxon is small(ish), this should stay small and we won't worry about splitting
+  it up into, say, parsingUtil.js and basicUtil.js and so on. But they are divided up by feature area.
+*/
+
+import { InvalidArgumentError } from "../errors.js";
+
+/**
+ * @private
+ */
+
+// TYPES
+
+export function isUndefined(o) {
+  return typeof o === "undefined";
+}
+
+export function isNumber(o) {
+  return typeof o === "number";
+}
+
+export function isInteger(o) {
+  return typeof o === "number" && o % 1 === 0;
+}
+
+export function isString(o) {
+  return typeof o === "string";
+}
+
+export function isDate(o) {
+  return Object.prototype.toString.call(o) === "[object Date]";
+}
+
+// CAPABILITIES
+
+export function hasIntl() {
+  try {
+    return typeof Intl !== "undefined" && Intl.DateTimeFormat;
+  } catch (e) {
+    return false;
+  }
+}
+
+export function hasFormatToParts() {
+  return !isUndefined(Intl.DateTimeFormat.prototype.formatToParts);
+}
+
+export function hasRelative() {
+  try {
+    return typeof Intl !== "undefined" && !!Intl.RelativeTimeFormat;
+  } catch (e) {
+    return false;
+  }
+}
+
+// OBJECTS AND ARRAYS
+
+export function maybeArray(thing) {
+  return Array.isArray(thing) ? thing : [thing];
+}
+
+export function bestBy(arr, by, compare) {
+  if (arr.length === 0) {
+    return undefined;
+  }
+  return arr.reduce((best, next) => {
+    const pair = [by(next), next];
+    if (!best) {
+      return pair;
+    } else if (compare(best[0], pair[0]) === best[0]) {
+      return best;
+    } else {
+      return pair;
+    }
+  }, null)[1];
+}
+
+export function pick(obj, keys) {
+  return keys.reduce((a, k) => {
+    a[k] = obj[k];
+    return a;
+  }, {});
+}
+
+export function hasOwnProperty(obj, prop) {
+  return Object.prototype.hasOwnProperty.call(obj, prop);
+}
+
+// NUMBERS AND STRINGS
+
+export function integerBetween(thing, bottom, top) {
+  return isInteger(thing) && thing >= bottom && thing <= top;
+}
+
+// x % n but takes the sign of n instead of x
+export function floorMod(x, n) {
+  return x - n * Math.floor(x / n);
+}
+
+export function padStart(input, n = 2) {
+  if (input.toString().length < n) {
+    return ("0".repeat(n) + input).slice(-n);
+  } else {
+    return input.toString();
+  }
+}
+
+export function parseInteger(string) {
+  if (isUndefined(string) || string === null || string === "") {
+    return undefined;
+  } else {
+    return parseInt(string, 10);
+  }
+}
+
+export function parseMillis(fraction) {
+  // Return undefined (instead of 0) in these cases, where fraction is not set
+  if (isUndefined(fraction) || fraction === null || fraction === "") {
+    return undefined;
+  } else {
+    const f = parseFloat("0." + fraction) * 1000;
+    return Math.floor(f);
+  }
+}
+
+export function roundTo(number, digits, towardZero = false) {
+  const factor = 10 ** digits,
+    rounder = towardZero ? Math.trunc : Math.round;
+  return rounder(number * factor) / factor;
+}
+
+// DATE BASICS
+
+export function isLeapYear(year) {
+  return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);
+}
+
+export function daysInYear(year) {
+  return isLeapYear(year) ? 366 : 365;
+}
+
+export function daysInMonth(year, month) {
+  const modMonth = floorMod(month - 1, 12) + 1,
+    modYear = year + (month - modMonth) / 12;
+
+  if (modMonth === 2) {
+    return isLeapYear(modYear) ? 29 : 28;
+  } else {
+    return [31, null, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][modMonth - 1];
+  }
+}
+
+// covert a calendar object to a local timestamp (epoch, but with the offset baked in)
+export function objToLocalTS(obj) {
+  let d = Date.UTC(
+    obj.year,
+    obj.month - 1,
+    obj.day,
+    obj.hour,
+    obj.minute,
+    obj.second,
+    obj.millisecond
+  );
+
+  // for legacy reasons, years between 0 and 99 are interpreted as 19XX; revert that
+  if (obj.year < 100 && obj.year >= 0) {
+    d = new Date(d);
+    d.setUTCFullYear(d.getUTCFullYear() - 1900);
+  }
+  return +d;
+}
+
+export function weeksInWeekYear(weekYear) {
+  const p1 =
+      (weekYear +
+        Math.floor(weekYear / 4) -
+        Math.floor(weekYear / 100) +
+        Math.floor(weekYear / 400)) %
+      7,
+    last = weekYear - 1,
+    p2 = (last + Math.floor(last / 4) - Math.floor(last / 100) + Math.floor(last / 400)) % 7;
+  return p1 === 4 || p2 === 3 ? 53 : 52;
+}
+
+export function untruncateYear(year) {
+  if (year > 99) {
+    return year;
+  } else return year > 60 ? 1900 + year : 2000 + year;
+}
+
+// PARSING
+
+export function parseZoneInfo(ts, offsetFormat, locale, timeZone = null) {
+  const date = new Date(ts),
+    intlOpts = {
+      hour12: false,
+      year: "numeric",
+      month: "2-digit",
+      day: "2-digit",
+      hour: "2-digit",
+      minute: "2-digit"
+    };
+
+  if (timeZone) {
+    intlOpts.timeZone = timeZone;
+  }
+
+  const modified = Object.assign({ timeZoneName: offsetFormat }, intlOpts),
+    intl = hasIntl();
+
+  if (intl && hasFormatToParts()) {
+    const parsed = new Intl.DateTimeFormat(locale, modified)
+      .formatToParts(date)
+      .find(m => m.type.toLowerCase() === "timezonename");
+    return parsed ? parsed.value : null;
+  } else if (intl) {
+    // this probably doesn't work for all locales
+    const without = new Intl.DateTimeFormat(locale, intlOpts).format(date),
+      included = new Intl.DateTimeFormat(locale, modified).format(date),
+      diffed = included.substring(without.length),
+      trimmed = diffed.replace(/^[, \u200e]+/, "");
+    return trimmed;
+  } else {
+    return null;
+  }
+}
+
+// signedOffset('-5', '30') -> -330
+export function signedOffset(offHourStr, offMinuteStr) {
+  let offHour = parseInt(offHourStr, 10);
+
+  // don't || this because we want to preserve -0
+  if (Number.isNaN(offHour)) {
+    offHour = 0;
+  }
+
+  const offMin = parseInt(offMinuteStr, 10) || 0,
+    offMinSigned = offHour < 0 || Object.is(offHour, -0) ? -offMin : offMin;
+  return offHour * 60 + offMinSigned;
+}
+
+// COERCION
+
+export function asNumber(value) {
+  const numericValue = Number(value);
+  if (typeof value === "boolean" || value === "" || Number.isNaN(numericValue))
+    throw new InvalidArgumentError(`Invalid unit value ${value}`);
+  return numericValue;
+}
+
+export function normalizeObject(obj, normalizer, nonUnitKeys) {
+  const normalized = {};
+  for (const u in obj) {
+    if (hasOwnProperty(obj, u)) {
+      if (nonUnitKeys.indexOf(u) >= 0) continue;
+      const v = obj[u];
+      if (v === undefined || v === null) continue;
+      normalized[normalizer(u)] = asNumber(v);
+    }
+  }
+  return normalized;
+}
+
+export function formatOffset(offset, format) {
+  const hours = Math.trunc(Math.abs(offset / 60)),
+    minutes = Math.trunc(Math.abs(offset % 60)),
+    sign = offset >= 0 ? "+" : "-";
+
+  switch (format) {
+    case "short":
+      return `${sign}${padStart(hours, 2)}:${padStart(minutes, 2)}`;
+    case "narrow":
+      return `${sign}${hours}${minutes > 0 ? `:${minutes}` : ""}`;
+    case "techie":
+      return `${sign}${padStart(hours, 2)}${padStart(minutes, 2)}`;
+    default:
+      throw new RangeError(`Value format ${format} is out of range for property format`);
+  }
+}
+
+export function timeObject(obj) {
+  return pick(obj, ["hour", "minute", "second", "millisecond"]);
+}
+
+export const ianaRegex = /[A-Za-z_+-]{1,256}(:?\/[A-Za-z_+-]{1,256}(\/[A-Za-z_+-]{1,256})?)?/;
diff --git a/npm_assets/node_modules/luxon/src/impl/zoneUtil.js b/npm_assets/node_modules/luxon/src/impl/zoneUtil.js
new file mode 100644
index 0000000..c45e828
--- /dev/null
+++ b/npm_assets/node_modules/luxon/src/impl/zoneUtil.js
@@ -0,0 +1,36 @@
+/**
+ * @private
+ */
+
+import Zone from "../zone.js";
+import IANAZone from "../zones/IANAZone.js";
+import FixedOffsetZone from "../zones/fixedOffsetZone.js";
+import InvalidZone from "../zones/invalidZone.js";
+
+import { isUndefined, isString, isNumber } from "./util.js";
+
+export function normalizeZone(input, defaultZone) {
+  let offset;
+  if (isUndefined(input) || input === null) {
+    return defaultZone;
+  } else if (input instanceof Zone) {
+    return input;
+  } else if (isString(input)) {
+    const lowered = input.toLowerCase();
+    if (lowered === "local") return defaultZone;
+    else if (lowered === "utc" || lowered === "gmt") return FixedOffsetZone.utcInstance;
+    else if ((offset = IANAZone.parseGMTOffset(input)) != null) {
+      // handle Etc/GMT-4, which V8 chokes on
+      return FixedOffsetZone.instance(offset);
+    } else if (IANAZone.isValidSpecifier(lowered)) return IANAZone.create(input);
+    else return FixedOffsetZone.parseSpecifier(lowered) || new InvalidZone(input);
+  } else if (isNumber(input)) {
+    return FixedOffsetZone.instance(input);
+  } else if (typeof input === "object" && input.offset && typeof input.offset === "number") {
+    // This is dumb, but the instanceof check above doesn't seem to really work
+    // so we're duck checking it
+    return input;
+  } else {
+    return new InvalidZone(input);
+  }
+}