Change `Plugin` and `Message` from `String` to `Data.Text`

Use the `Data.Text` type instead of `String` in most of the places we
use it in `Plugin` and `Message`.

This allows us to more easily pass data between the IRC package. No more
kludgy `pack`s and `unpack`s in our IRC message handler.

The one thing we couldn't convert was our regex. From what I understand
(https://stackoverflow.com/questions/14922579/haskell-regular-expressions-and-data-text#14922626),
the regex library I'm using doesn't support `Data.Text`, so use
`String`s for that instead.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/Plugin/Base.hs b/src/Plugin/Base.hs
index 6ba4ca5..62900c7 100644
--- a/src/Plugin/Base.hs
+++ b/src/Plugin/Base.hs
@@ -4,11 +4,13 @@ module Plugin.Base
     , Plugin(..)
     ) where
 
+import qualified Data.Text as T
+
 import Database.SQLite.Simple
 
 import Message
 
-type PluginAction = Message -> IO (Either String String)
+type PluginAction = Message -> IO (Either T.Text T.Text)
 
 data Plugin = Plugin
     { matchRegex :: String