UART enhancements#1186

Merged

tannewt merged 3 commits intoadafruit:3.xfrom

dhalbert:uart-enhancements

Sep 12, 2018

Commits on Sep 12, 2018

When UART timeout of zero is given, make read() return data already available

PaulKierstead
authored and
dhalbert
committed
UART fixes and enhancements; default board object fix
dhalbert
committed
fix nrf builds; sphinx 1.8.0 crashing: use lower version
dhalbert
committed