poetry draft

[goatrocks]

Summary

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• Jira story/task is put into PR title
• Code has been self-reviewed
• Hard-to-understand areas have been commented
• Documentation has been updated
• My changes generate no new warnings
• Unit tests have been added for base functionality and known edge cases
• Any dependent changes have been merged and published in downstream modules

[goatrocks]

thinking it would be good to combine this, #314, and #303 to switch to poetry, use optional dependencies, and get typing in for the next major client version