Helper methods

[mbax]

<@Zarthus> #getBans, #getUserlist, #isVoiced(User), #isOpped(User),
                 #isHalfop(User), #getOps, #getHalfOps, #getVoices, #ban(User),
                 #deop(User), #op(User), #kick(User, reason), #remove(User,
                 reason), #unban(mask), #voice(User), #devoice(User)

[kashike]

#kickban(User, String)

[mbax]

Client#isUser(User) self-check

Helper methods for processing message tags.

[havokoc]

#isProtected(User), #getProtected, #isOwner(User), #getOwner(),
#getTopic, #getInviteExemptions, #getBanExemptions, #getMutes

[jamietech]

#ban(String)

[mbax]

I'm closing this in favor of specific issues.