* migrate docstrings from reST to google format
* add raises note
Also change behaviour of the `from_option` method to fallback to
disabled instead of raising exception on unknown option
* fix part of warnings for sphinx
* make identation a bit more readable
* review fixes
* add verbose description for properties to make them parsed by sphinx extenstion
* add demo sphinx generator
* add ability to add manually stored packages
* update tests
* handle manual packages in remove-unknown method
* live fixes
also rename branches to has_remotes method and change return type