holds various info on a channel that the user is a member of.

	interface
	openUserList

	messages
	sendMessage:

	private-initialization
	initializeName:connection:

	access	top
	addMember: note that memberName is on the channel. memberName should be given in the user's preferred capitalization
	addMembers:
	changeTopic: attempt to change the topic
	connection return the IRC connection I am watching
	memberNames names of the clients subscribing to this channel
	name name of the channel, in its preferred capitalization
	removeMember: note that memberName has left (PART-ed or QUIT-ed) the channel
	subscribe: add anObject as a subscriber. anObject must respond to ircMessageRecieved
	subscribers collection of objects watching for messages on the channel
	topic
	topic:
	unsubscribe: unsubscribe anObject

	interface	top
	openUserList open a listing with all the users on this channel

	messages	top
	sendMessage: send a message on the channel

	private-initialization	top
	initializeName:connection:

	instance creation	top
	forChannelNamed:onConnection: create an instance for the channel with the given name