CHANGELOG.md in mocktail-0.0.4 vs CHANGELOG.md in mocktail-0.0.5

@@ -1,5 +1,9 @@
-# unreleased
+# 0.0.5
+
+* Fix concurrency [#6](https://github.com/testdouble/mocktail/pull/6)
+
+# 0.0.4
 
 * Introduce Mocktail.explain(), which will return a message & reference object
   for any of:
   * A class that has been passed to Mocktail.replace()
   * An instance created by Mocktail.of() or of_next()