CHANGELOG.md in zhong-0.1.8 vs CHANGELOG.md in zhong-0.1.9

@@ -1,4 +1,8 @@
+## 0.1.9
+
+- Much more performant heartbeat checks (thanks, @sherinkurian).
+
 ## 0.1.8
 
 - Make it very clear when callbacks cause skips of ticks or runs.
 - Add logging when jobs/ticks are skipped.
 - Do not skip when callbacks return nil (only on false explicitly).