-r requirements.txt Jinja2>=2.7.2 hsluv>=5.0.0 pyphen>=0.9.1 micawber>=0.3.0 pygal>=2.0.0 typogrify>=2.0.4 phpserialize>=1.3 notebook>=4.0.0 ipykernel>=4.0.0 ghp-import>=1.0.0 aiohttp>=3.0.0 watchdog>=0.8.3 ruamel.yaml>=0.15 toml>=0.9.2 html5lib>=1.0