Move away from fully_reduces_to_null to rule_position, fixed some bugs. Have not fixed all, still looks up unkown key-value for the full kraken parse test.

stdlib/map.krak

@@ -51,7 +51,7 @@ obj map<T,U> (Object) {
         var key_loc = keys.find(key)
         if (key_loc == -1) {
             io::println("trying to access nonexistant key-value!")
-            /*while (true) {}*/
+            while (true) {}
         }
         return values.get(key_loc)
     }