Document the chanflood module
Allow channel ops to bypass the channel flood mode
Fix user MODE derp on server MODE
Merge pull request #94 from Heufneutje/tweak-chanflood

Channel flood tweaks
Run actions on invite
Require a minimum channel status to use the INVITE command

This check was missing. I'm not sure if this was intentional, but in my opinion
it should be there, since the INVITE command is rather pointless if any user in
the channel can invite other people.
Implement the KNOCK module