ReadPixel is working (we hope)
ReadPixel is working (we hope)

This is a combination of stuff done by hellmann42 and myself that
appears to be working

kirberich/teensy_ssd1351,kirberich/teensy_ssd1351,kirberich/teensy_ssd1351,kirberich/teensy_ssd1351,kirberich/teensy_ssd1351