Add v3.22.0 to CHANGELOG
Add v3.22.0 to CHANGELOG

(cherry picked from commit 388d5c381a48c409ace0ac38f4dd35109fe8f0a2)

sandstrom/ember.js,sandstrom/ember.js,tildeio/ember.js,elwayman02/ember.js,tildeio/ember.js,emberjs/ember.js,elwayman02/ember.js,knownasilya/ember.js,elwayman02/ember.js,mixonic/ember.js,emberjs/ember.js,stefanpenner/ember.js,stefanpenner/ember.js,mixonic/ember.js,knownasilya/ember.js,knownasilya/ember.js,elwayman02/ember.js,sly7-7/ember.js,sly7-7/ember.js,emberjs/ember.js,sly7-7/ember.js,stefanpenner/ember.js,sandstrom/ember.js,tildeio/ember.js,mixonic/ember.js