Updated changelog

Author: mwvaughn

CHANGELOG

@@ -6,8 +6,16 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 ## [Unreleased]
 
 ### Added
+* New recipe - `pcluster/isolated_clusters`
 
 ### Fixed
+* In `res_demo_env`, improvements to KeyCloak support
+* In `res_demo_env`, support for automatically shutting down Windows AD domain management host
+* In `slurm_accounting_with_email`, fixes to misdirected Cfn TemplateURLs
+* In `res_demo_env`, automatically encrypt domain host EBS volume
+* In `res_demo_env`, fixes to pip and Python enviroments
+* In `public_certs`, `ssm:GetParameter` permissions now use partition and region parameters
+
 
 ### Changed
 * Updated all instances of ParallelCluster 3.9.0 to 3.9.2 to pick up a critical bug fix.