Per original discussion in this thread with @carlosantoniodasilva and @rafaelfranca, I have cleaned up the CacheHelper changes and added a CHANGELOG. I couldn't figure out how to add to the closed PR so I made a new one - hope that's okay!
Instead of deleting the skip_digest option flag, this changes the method to merely check the
key. This change is because of a discussion in this thread:
This commit also makes #fragment_name_with_digest private due to its
functionality being subsumed by #cache_fragment_name.