related to [issue
53](https://github.com/espressif/arduino-esp32/issues/53)

Fixes: https://github.com/espressif/arduino-esp32/issues/54

fixes: https://github.com/espressif/arduino-esp32/issues/55

* Add "Noduino Quantum" board

* change the value of build.board from Quantum to QUANTUM

NOTE: UART1's default pins can be used only when SPI Flash is DIO

thanks @Ladyada

thanks @Ladyada

thanks @Ladyada

- Shorten filenames
- Add log_printf with mutex locking to play nice with Serial and two
cores

Issue is when Arduino.h is included in C file

* Add from original Arduino.h

* Add board "ESPea32"

* cleanup

* cleanup

* Change SS to 5

* First addition of ESP320 support

* Updated maximum data size.

Added code to bypass certificate verification. merge with caution.

* i2c-thread-safe:
  remove unnecessary locks
  return proper errors
  implement thread-safe i2c

* spi-thread-safe:
  remove unnecessary locks
  implement thread-safe spi

* uart-thread-safe:
  do not lock for ets_printf
  Implement thread-safe uart