Add getPixel(), fix macros, enable 800 KHz I2C on ESP32

1.2.4

Sweep of various things. ESP32 I2C clock, add getPixel(), etc.

ESP32 fix

1.2.3

ESP32 fix

Teensy fix

1.2.2

Teensy fix

Minor fix for old code compatibility

1.2.1

Minor fix for old code compatibility

Dynamic buffer allocation, support alt Wire & SPI buses

1.2.0

Dynamic allocation for screen buffer, supports alt Wire & SPI buses, …

make portreg defaults reasonable

1.1.2

bump

1.1.0

Updated for ESP support and general cleanup

1.0.1 release with improved ESP8266 support

Minor bump with bug fixes for ESP8266.

1.0.0 release for Arduino

Automated initial release for Arduino library system.