Adding `class_exists()` check to be sure to avoid any conflicts in ZenCache; if someone happens to enable both. Ugh. See: websharks/zencache#5
Soft fail on missing plugin file. See: websharks/zencache#5
Soft fail on missing plugin file. See: websharks/zencache#5
Merge branch 'feature/zc5' into 000000-dev