I just did upgrade to moo 3.1.1. I had to first switch to php 5.6 and then switch to php 7.1. It would be nice if moo could run on php 7.2 and also not have to switch to 5.6 to do upgrades or installs. Php 7.2 is very fast. Also, moo should update to Cake 3.0 ASAP. Do those two things and moo will be way ahead of most other scripts.
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Upgrade to cake 3.0 will be a big job, we already added this job into pool of features for next version but it's not at high priority.