Update CHANGES.md

23Skidoo · web-flow · commit 69400b69422d · 2017-10-08T07:30:44.000+01:00
[ci skip]
diff --git a/CHANGES.md b/CHANGES.md
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+## 0.1.?.? (2017-??-??)
+
+ * Fix a space leak in `System.Metric.Label.set` ([#21](https://github.com/tibbe/ekg-core/pull/21)).
+ 
 ## 0.1.1.2 (2017-07-31)
 
  * GHC 8.2 support.
