fix compatibility with older python versions

What's Changed

• Bump pypa/gh-action-pypi-publish from 1.9.0 to 1.10.1 in the actions group by @dependabot in #15 and #16
• Fix compatibility with older Python versions by @sworisbreathing in #18
• add tests for older python versions in CI by @2bndy5 in #19

New Contributors

• @dependabot made their first contribution in #15
• @sworisbreathing made their first contribution in #18

Full Changelog: v0.3.0...v0.3.1

complete `UART`/`I2C` mocks and transform fixture

What's Changed

• migrate fixture into a separate module by @2bndy5 in #11
• add I2CScan operation by @2bndy5 in #13
• improve UART mock by @2bndy5 in #14

Full Changelog: v0.2.0...v0.3.0

Implement busio singletons and add more mock pins

What's Changed

• fix msg in assertion error for busio.SPI.write_readinto() by @2bndy5 in #3
• improve board mock and implement busio singletons by @2bndy5 in #7

Full Changelog: v0.1.0...v0.2.0

Initial Release

What's Changed

• initial support for SPI, I2C, UART, and DigitalInOut classes
• begin docs by @2bndy5 in #1
• add CI workflows by @2bndy5 in #2

Full Changelog: https://github.com/2bndy5/CircuitPython-mocks/commits/v0.1.0