Updating CHANGELOG for 0.16.0 release.
Updating CHANGELOG for 0.16.0 release.

medallia/aurora,medallia/aurora,thinker0/aurora,apache/aurora,thinker0/aurora,crashlytics/aurora,apache/aurora,medallia/aurora,medallia/aurora,crashlytics/aurora,rdelval/aurora,crashlytics/aurora,crashlytics/aurora,apache/aurora,crashlytics/aurora,apache/aurora,thinker0/aurora,medallia/aurora,thinker0/aurora,rdelval/aurora,thinker0/aurora,rdelval/aurora,medallia/aurora,apache/aurora,rdelval/aurora,crashlytics/aurora,apache/aurora,rdelval/aurora,thinker0/aurora,rdelval/aurora