Fix help command with unknown commands
Fix bullet points in readme
Merge branch 'seen'

* seen:
  Beginnings of a seen plugin. Will track when a user talks.
Reconnect if connection lost
Merge branch 'seen'

* seen:
  Stop printing returns of NAMES requests on channel join
Seperate goodbye plugin to own plugin. Goodbye now checks factory nicklist before sending message.
Seen plugin now tracks most user activity.

Move all user tracking related items to seen plugin, and implemented NAMES
information as interface methods in hamper.interfaces.PopulationPlugin