Replace default null variables with empty object to fix 400 error fro…

…m API when variables are not set explicitly, release 0.23.4

Release 0.23.3

Merge pull request #113 from bookernath/cd-action

Change CD GH action to be trigged on release instead of push, and bump version/release

Merge pull request #112 from bookernath/cd-action

Remove test PyPi from CD and release

Merge pull request #111 from bookernath/cd-action

Add GitHub action to automate publishing to PyPi

Release 0.22.2

Merge pull request #99 from bookernath/0.22.1

Add class method for JWT payload and release 0.22.1

Merge pull request #98 from bookernath/refactor

Update changelog and license year

Releasing 0.20.1

Releasing 0.19.1