Add changelog entry for #209 (#211)

cbracken · web-flow · commit b5b065cd9a5f · 2017-12-14T10:09:58.000-08:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.10-0-dev
+
+ * BREAKING CHANGE: `createHitmap` and `mergeHitmaps` now specify generic types
+   (`Map<String, Map<int, int>>`) on their hit map parameter/return value.
+
 ## 0.9.3 - 2017-10-02
 
  * Strong mode fixes as of Dart SDK 1.24.0.
