2022.2.1

This is a minor release on the 2022.2 series.

Notable Changes

• updates caliper reader to convert caliper metadata values into correct Python objects
• adds to_json writer and from_dict and from_json readers
• adds render_header parameter to tree() to toggle the header on/off
• adds the ability to match leaf nodes in the Query Language

Other Changes

• exposes version module to query hatchet version from the command line
• docs: update to using hatchet at llnl page
• adds a GitHub Action to test PyPI releases on a regular schedule