New: Inventory class!  BotReactions upgraded!  The bot will only go selling when necessary.  Maintenance: Using better list functions.

Inventory object now handles selling and dropping and the inventory list and methods.  It's nice and clean with the use of BotReactions, which now supports multiple regexes.  Aside, there are more pythonic ways to use lists than I have been using (ie .index and .count).  I think I broke the 'bot n' command.