Revert "Updating CHANGELOG for 0.15.0 release."
Revert "Updating CHANGELOG for 0.15.0 release."

This reverts commit 5de1803a247964bd7c4227562c33c4b9108c3c21.

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