Rewrote nearly everything!

* Rewrote the whole architecture to achieve extreme modularity
* Added the ability to build a multiprotocol bot
* Added cabal integration
* Added configuration handling the XMonad style
* Added configuration in ~/.hsbot
* Refactored many many named and functions
* Refactored data structures
* Cleaned a big bunch of stuff

Hsbot/Irc/Command.hs

@@ -0,0 +1,59 @@
+module Hsbot.Irc.Command
+    ( processInternalCommand
+    , registerCommand
+    , unregisterCommand
+    ) where
+
+import Control.Monad.State
+import qualified Data.List as L
+import qualified Data.Map as M
+import Data.Maybe
+
+import Hsbot.Irc.Message
+import Hsbot.Irc.Plugin
+import Hsbot.Irc.Types
+
+-- | Registers a plugin's command
+registerCommand :: String -> String -> IrcBot ()
+registerCommand cmd pluginName' = do
+    ircBot  <- get
+    let cmds    = ircBotCommands ircBot
+        plugins = ircBotPlugins ircBot
+    case M.lookup pluginName' plugins of
+        Just _  -> let pluginNames = pluginName' : fromMaybe [] (M.lookup cmd cmds) -- TODO : remove/check for duplicates ?
+                       newCmds     = M.insert cmd pluginNames cmds
+                   in  put $ ircBot { ircBotCommands = newCmds }
+        Nothing -> return ()
+
+-- | Unregisters a plugin's command
+unregisterCommand :: String -> String -> IrcBot ()
+unregisterCommand cmd pluginName' = do
+    ircBot    <- get
+    let cmds    = ircBotCommands ircBot
+        newCmds = M.adjust (L.delete pluginName') cmd cmds
+    put $ ircBot { ircBotCommands = newCmds }
+
+-- | Processes an internal command
+processInternalCommand :: IrcBotMsg -> IrcBot ()
+processInternalCommand (IntIrcCmd ircCmd)
+  | ircCmdTo ircCmd == "CORE" = processCoreCommand ircCmd
+  | otherwise = do
+      plugins <- gets ircBotPlugins
+      case M.lookup (ircCmdTo ircCmd) plugins of
+          Just plugin -> sendToPlugin (IntIrcCmd ircCmd) plugin
+          Nothing     -> return ()
+processInternalCommand _ = return ()
+
+-- | Processes a core command
+processCoreCommand :: IrcCmd -> IrcBot ()
+processCoreCommand ircCmd = do
+    let command' = ircCmdCmd ircCmd
+        originalRequest = ircCmdBotMsg ircCmd
+    case command' of
+        "LIST"       -> listPlugins originalRequest (ircCmdFrom ircCmd)
+        "LOAD"       -> loadIrcPlugin $ ircCmdMsg ircCmd
+        "UNLOAD"     -> unloadPlugin $ ircCmdMsg ircCmd
+        "REGISTER"   -> registerCommand (ircCmdMsg ircCmd) (ircCmdFrom ircCmd)
+        "UNREGISTER" -> unregisterCommand (ircCmdMsg ircCmd) (ircCmdFrom ircCmd)
+        _            -> return ()
+