Adding the serial_bytes_available() method to the 3.x branch#1317

Merged

tannewt merged 2 commits intoadafruit:3.xfrom

ATMakersBill:serial_bytes_avail_backport

Nov 4, 2018

Commits on Nov 3, 2018

Adding the serial_bytes_available() method to the 3.x branch
ATMakersBill
committed
adding changes to mpconfigboard.mk to reduce memory usage on CPX per @danh
ATMakersBill
committed