Add changelog entry

Ruben Bridgewater · Ruben Bridgewater · commit 065851bd0914 · 2016-11-18T15:42:19.000+01:00
diff --git a/changelog.md b/changelog.md
@@ -4,6 +4,10 @@ Features
 
 -  Improve `stringNumbers` parsing performance by up to 100%
 
+Bugfixes
+
+-  Do not unref the interval anymore due to issues with NodeJS
+
 ## v.2.1.1 - 31 Oct, 2016
 
 Bugfixes
