most of hash map - have to commit fix for unify type first

tests/test_map.expected_results

@@ -10,3 +10,15 @@ Lookie, a map!
 What I get for not testing different types
 key: 7, value: Lookie, a map!
 key: 30, value: we'll look for for_each too
+3
+2
+1
+3
+20
+2
+30
+4
+Lookie, a map!
+What I get for not testing different types
+key: 30, value: we'll look for for_each too
+key: 7, value: Lookie, a map!