v1.19.1-1

sync with micropython v1.19.1

v1.18.0-1

Update mpy to 1.18.0

The pwm has some problems, it can't output freq <= 610 on gpio5, so the lower note in beeplayer can't play.

v1.17.0-2

• Improve updater

v1.17.0-1

see README.md for installing.