mark unicode normalization with type
Merge pull request #21 from jlatt/safer-unicoding

normalize unicode safely
Merge remote-tracking branch 'origin/master' into cleanup

Conflicts:
	irc/client.go
	irc/commands.go
	irc/constants.go
	irc/reply.go
	irc/server.go
	irc/types.go
readme
move modes code to its own file; fix SQL (un)marshalling