A nanoframework driver for ili9341-based displays interfaced using SPI.

An extended port port of veccsolutions' Netduino drivers, with inspiration taken from Adafruit's Arduino drivers.

This driver is 100% managed code, which makes it slow. However, being managed means that it should be fully platform-agnostic (although it has currently only been tested on an Adafruit HUZZAH32 ESP32-based board).