implement SHA fallback behaviour (pycontribs#1678)

* use SIGNATURE_RSA for better compatibility with older oauthlib

reduce code duplication and configure `_session` auth after other con…

…fig (pycontribs#1623)

[pre-commit.ci] pre-commit autoupdate (pycontribs#1607)

* pre-commit bump

* remove trailing .git so auto-generated version diff urls work fine

---------

Co-authored-by: adehad <[email protected]>

Remove setup.py and tidy build scripts (pycontribs#1443)

* Remove setup_requires for setuptools_scm_git_archive

This dependency is not needed.

The documentation at https://github.com/Changaco/setuptools_scm_git_archive
states that there are two files needed for this to work .git_archival.txt and
.gitattributes. Both files are missing in this repository.

See also pycontribs#1365

* bump setuptools_scm

* move to pyproject

* revert to setup.cfg, removing setup.py

* revert tox to see if that fixes test?

* more file deletes

* isolated build

* add tests.py to pytest files

* revert pyup as we still have a GHA, that runs on main

Co-authored-by: Frank de Brabander <[email protected]>

Add support for IssueProperty resource (pycontribs#1439)

allow filter updates when no description returned by Jira (pycontribs…

…#1447)

ensure `None` is handled correctly in `search_issues()` (pycontribs#1434

)

add GHA to dependabot updates (pycontribs#1417)

Additional scheme endpoints for projects (pycontribs#1295)

More gha (pycontribs#1235)