MXIAppDelegate: Insert pragma marks and sort code accordingly.
Create MXIChatWindowController and move most of MXIAppDelegate there.
Miliseconds are 10^(-3) seconds, microseconds are 10^(-6).
Change font to Helvetica Neue Light.
Prevent showing <null> for servermessages that don't have a nick.
Rework parts of the heartbeat code and store eid on BufferEvents.
Fix declaration of didReceiveBufferEvent.
Make font-weight of notices the same as normal messages, just italic.
Make nick-completion case-insensitive and fix a bug where it wouldn't complete after the fullname has been typed.
Merge pull request #11 from nezza/master

Seperate the chat-window logic from the application delegate