small int overflow on non-longint board

[dhalbert]

Discord user thesmelliestone could not use this library on a Trinket M0. It appears that a register read is assuming longint support:

import adafruit_ds3231
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "adafruit_ds3231.py", line 67, in <module>
  File "adafruit_ds3231.py", line 97, in DS3231
  File "adafruit_register/i2c_bits.py", line 63, in init
OverflowError: small int overflow

[m313]

I could replicate the error on a Gemma M0 board.

[Julien-768]

I have the same issue on feather M0 adalogger.