Add physic, image14bit, GPIO fallback

See https://periph.io/news/2018/v2.3.0/ for the details.

BeagleBone support

Incremental fixes, more experimental drivers, gpioreg refactoring.

See https://periph.io/news/2018/v2.2.0/ for the details.

v2.1.0: Huge performance increase

A lovely GPIO performance increase.

See https://periph.io/news/2017/v2.1.0/ for the details.

New exciting version 2.0.0

As a major version bump, this new release has backward incompatible changes.

See https://periph.io/news/2017/v2.0.0/ for all the breaking changes and new features.

Initial release

All versions on the v1.x branch are guaranteed to be compatible with code written to work with v1.0.0.