Drop parseVarWithoutAssignment

Additionally sorts gitignore and adds attempted decoding of lists back
to the REPL

src/REPL.hs

@@ -66,4 +66,6 @@ decodeResult tc = case toNumber tc of
   Right num -> show num
   Left _ -> case toString tc of
     Right str -> "\"" ++ str ++ "\""
-    Left _ -> formatResult TreeCalculus tc
+    Left _ -> case toList tc of
+      Right list -> "[" ++ intercalate ", " (map decodeResult list) ++ "]"
+      Left _ -> formatResult TreeCalculus tc