Use year duration range for copyright attribution

Fix version strings in workflow files

Add setuptools-scm to build system requirements

Signed-off-by: Alec Delaney <tekktrik@gmail.com>

Added cp.org link to index.rst

Set language to "en" for documentation

Signed-off-by: Alec Delaney <tekktrik@gmail.com>

Updated docs link, updated python docs link, updated setup.py

Merge pull request adafruit#18 from adafruit/patch-fix

Linted

Updated readthedocs file

Signed-off-by: dherrada <dylan.herrada@adafruit.com>

Merge pull request adafruit#16 from adafruit/rainbowio

Update examples to use rainbowio

Merge pull request adafruit#15 from adafruit/dherrada-patch-1

Moved from pulseio.PWMOut to pwmio.PWMOut