added event for when bot has it's nick changed.

bot.py

@@ -312,7 +312,7 @@ class Fulvia(irc.IRCClient):
 
 
 	def left(self, channel, reason=""):
-		"""Called when the leaves a channel."""
+		"""Called when the bot leaves a channel."""
 		line = "-!- " + self.nickname + " " + "[" + self.username + "@"
 		line += self.host + "] has left " + channel + " [" + reason + "]"
 		self.log(channel, line)
@@ -384,6 +384,20 @@ class Fulvia(irc.IRCClient):
 		self.channels.pop(channel)
 
 
+	def nickChanged(self, nick):
+		"""Called when the bot changes it's nickname."""
+		line = "-!- you are now known as " + nick
+
+		user = self.users.pop(self.nickname)
+		self.users[nick] = user
+		for key, channel in self.channels.items():
+			self.log(key, line)
+
+			channel.rename_user(self.nickname, nick)
+		user.nick = nick
+		self.nickname = nick
+
+
 	## Actions the bot observes other users doing in the channel.
 	## These will get called automatically.
 
@@ -444,7 +458,7 @@ class Fulvia(irc.IRCClient):
 
 
 	def userRenamed(self, oldname, newname):
-		"""Called wehn the bot sees a user change their nickname."""
+		"""Called when the bot sees a user change their nickname."""
 		line = "-!- " + oldname + " is now known as " + newname
 
 		user = self.users.pop(oldname)