MixThread, Bug fixes and additional bot code

- MixThread uses a MixReactions listener to do batch mixing for the user
- a list of herb mix results have been added to the notes directory
- TelnetBotThread is a child of BotThread that includes the telnet
handler (important if you want to instantiate Reactions in the
BotThread)
- Other improvements include reaction registration / unreg in
telnetbotthread and a self.sleep call in BotThread so child classes dont
have to import time