Move all scripts and documentation to Python3#6378

Merged

earlephilhower merged 9 commits intoesp8266:masterfrom

earlephilhower:python3

Aug 28, 2019

Commits on Aug 4, 2019

Re-add Python2 compatibility tweaks
earlephilhower
committed

Commits on Aug 20, 2019

Commits on Aug 28, 2019