CHANGELOG.mkd in r10k-3.9.1 vs CHANGELOG.mkd in r10k-3.9.2

@@ -2,9 +2,13 @@
 =========
 
 Unreleased
 ----------
 
+3.9.2
+
+- Makes the third parameter to R10K::Actions optional, restoring backwards compatability broken in 3.9.1.
+
 3.9.1
 -----
 
 - Invalid module specifications in a Puppetfile will cause the R10K run to abort earlier than before. Prior to this release, the R10K run would complete, sync all other modules, and return an exit code of 1. R10K will now stop syncing modules and abort immediately. [#1161](https://github.com/puppetlabs/r10k/pull/1161)