Trucate history
Set up instance attributes

This is a cleaner way to set up a class. Now we know what the instance variables
are.
Remove/inline some attributes from `six`

We're not supporting Python 2, so no need for :mod:`six`. Might as well start
inlining those attributes now.
Remove backdoor; move convenience.* into server
Remove from __future__.*, reformat all files
Rename everything to guv
Change logger name
Remove unneeded files
Add epoll support
Fix bug: pass epoll.poll() the specified timeout
Make log message more readable
Reformat docstring
Auto-detect if pyuv is present, else fall back to epoll
Clean up code
Update TODO items
Remove @logged decorator
Make compatibile with Python 3.2 by using f.__name__
Remove unneeded default Listener implementation
Update classifiers: now pre-alpha
Add note about pypy3 support