Clean up and move things around

byg/src/Evaluation/Function.hs

@@ -0,0 +1,8 @@
+module Evaluation.Function
+  ( evalFunction
+  ) where
+
+import Types (Function(..))
+
+evalFunction :: Function -> a -> b
+evalFunction = undefined

byg/src/Evaluation/FunctionIO.hs

@@ -0,0 +1,8 @@
+module Evaluation.FunctionIO
+  ( evalFunctionIO
+  ) where
+
+import Types (FunctionIO(..))
+
+evalFunctionIO :: FunctionIO -> a -> b
+evalFunctionIO = undefined