Try to workaround empty `GITHUB_REF` bug of GitHub runners

Bump to 0.5.1

Remove PyMC adapter

It's now supported by PyMC directly, since v5.1.1.

Closes #11 because adapters should no longer be located here.

Require PyMC adapter to be imported explicitly

Bump to 0.3.0

Bump to 0.2.7

Merge pull request #72 from michaelosthege/bump026

Bump for 0.2.6

Give more informative errors for unsupported dtypes

Fix encoding/decoding of F-ordered numpy arrays

Closes #63

Bump to 0.2.3