Merge pull request adafruit#1036 from hathach/fix_nrf52840_serial

Fix nrf52840 serial mentioned adafruit#1021

Merge pull request adafruit#1006 from dhalbert/3.x-fix-pull

must set pull after setting direction with gpio_set_pin routines

Merge pull request adafruit#986 from tannewt/include_rtc_fix

include RTC fix for SAMd51 in circuitpython build

Merge pull request adafruit#945 from tannewt/nrf52832

Switch to Feather52s full name to avoid confusion with the nrf52840 later

Add trailing dash so that the exact board is matched.

Merge pull request adafruit#866 from tannewt/touchio3

Use merged in FreeTouch

Merge pull request adafruit#812 from dhalbert/2.x-filesystem-writabil…

…ity-on-boot

2.x: Fix regression preventing remount as readwrite in boot.py

Merge pull request adafruit#802 from dhalbert/2.x-filesystem-work

2.x: handle bad power on reset better

Merge pull request adafruit#776 from dhalbert/hid_gamepad

HID gamepad support

Merge pull request adafruit#747 from dhalbert/reformat

add storage.erase_filesystem() to erase and reformat CIRCUITPY