Hide internal phing targets from 'phing -l'#139

Merged

becw merged 3 commits intorelease-2.0from hide-targets

Dec 2, 2019

+44-34

Commits on Nov 27, 2019

Hide internal phing targets from 'phing -l'; update default target to a list command. See https://akrabat.com/a-few-phing-tips/
becw
committed

Commits on Dec 2, 2019