Changes in branch ESP32-v3.0 (disable/enable BLE and Wifi)

Thanks for this guys.

I've pulled and done a build....

The vars have increased after:

>ESP32.enableBLE(false);
Erasing saved code.
Done!

>process.memory();
={ "free": 4238, "usage": 62, "total": 4300, "history": 4,
  "gc": 0, "gctime": 3.282 }

WARNING: Bluetooth is disabled per ESP32.enableBLE(false)
WARNING: has simple connection not implemented yet

The last message suggests that some intialisation code is still running?

The NRF object is still visible - I'm not sure if this is an issue or not.

Do you want to continue the conversation here or on github?