CHANGELOG.md in statsd-instrument-2.3.4 vs CHANGELOG.md in statsd-instrument-2.3.5

@@ -3,9 +3,13 @@
 This file documents the changes between releases of this library. When creating a pull request,
 please at an entry to the "unreleased changes" section below.
 
 ### Unreleased changes
 
+## Version 2.3.5
+
+- Re-add `StatsD::Instrument.duration`, which was accidentally removed since verison 2.5.3 (#157)
+
 ## Version 2.3.4
 
 - Improve performance of `Metric#to_s` (#152)
 - Fix bug in escaping newlines for events with Datadog Backend (#153)