update changelog

Author: Marin Usalj

CHANGELOG.md

@@ -1,13 +1,20 @@
-## master
+## 1.5
+
+#### Breaking changes
+
+- `+mappings` are now a class method!
 
 - Added support for variadic arguments in `+where:`, `+find:`, and
   `+countWhere:`. (This also removes the now-redundant `+whereFormat:`.)
 
+#### Enhancements
+
 - Formatted arguments now use `+predicateWithFormat:` instead of
-  `+stringWithFormat:` (to enforces proper predicate quoting).
+  `+stringWithFormat:` (to enforce proper predicate quoting).
 
 - `+find:` now supports predicates.
 
+
 ## 1.2
 
 #### Features