Downgrade to 1.0.1 (see #2786) gives compilation errors 

See https://github.com/espressif/arduino-esp32/issues/2786

PubSubClient needs EthernetClient.h and cannot compile on ESP 1.0.2
M5ez versions 2.1.0 through 2.0.0 don't compile with ESP 1.0.1

Any thoughts on getting both  PubSubClient and M5ez working?

### Hardware:
Board:							M5Stack ESP32
Computer OS:                                        Mac OSX

