Remove mtl dependency

src/Dodge/Room/BlinkAcross.hs

@@ -1,6 +1,7 @@
 module Dodge.Room.BlinkAcross where
 
-import Control.Monad.State
+--import Control.Monad.State
+import Control.Monad.Trans.State.Lazy
 import Dodge.Cleat
 import Dodge.Data.GenWorld
 import Dodge.PlacementSpot

src/Dodge/Room/Branch.hs

@@ -3,7 +3,8 @@ Collections of rooms that branch into multiple paths.
 -}
 module Dodge.Room.Branch where
 
-import Control.Monad.State
+--import Control.Monad.State
+import Control.Monad.Trans.State.Lazy
 import Dodge.Cleat
 import Dodge.Data.GenWorld
 import Dodge.Room.Door

src/Dodge/Room/Treasure.hs

@@ -4,7 +4,8 @@ Typically dead ends.
 -}
 module Dodge.Room.Treasure where
 
-import Control.Monad.State
+--import Control.Monad.State
+import Control.Monad.Trans.State.Lazy
 import Dodge.Data.GenWorld
 import Dodge.Default.Room
 import Dodge.LevelGen.PlacementHelper