Is your feature request related to a problem? Please describe.
part of the feature request #233,
the relevant docstrings should include details for

• versionadded
• versionchanged
• deprecated

according to
https://www.sphinx-doc.org/en/master/usage/restructuredtext/directives.html#directive-versionadded

the contributing guide should be updated to recommend the usage.