Bump version: 5.4.0 → 5.5.0

Bump version: 5.3.0 → 5.4.0

Bump version: 5.2.0 → 5.3.0

cache bust github action

github actions don't allow you to delete cache.
This cause builds to breaks when depending on a new version of a dependency
in tox.
Use new setup-python pip cache directive instead of manually caching pip.
Amend tox cache to look for an envirnment secret CACHE_VERSION.
Updating this property will bust the cache.

Bump version: 5.0.0 → 5.1.0

Bump version: 4.6.0 → 5.0.0

simplify built-in echo pipeline to remove extraneous copy step

Bump version: 4.4.1 → 4.5.0

Bump version: 4.4.0 → 4.4.1

Bump version: 4.3.0 → 4.4.0