Removed deprecations
Removed new event system
Added documentation for all events
Added FAQ
Changed Client.uid to Client.id
Improved User model
Prepared for support of pages
I also removed the parameter `set_default_events` from __init__, since
it's not really necessary
Also added testing of examples and simple testing of listen functions
The docs are still very WIP, but they should be functional. Just
execute `make html` in the docs folder, and you should be able to
navigate to `/docs/_build/html` and view it in your browser
