This extensive explanation is not need anymore because they are now
unsupported for a long time.
Instead add as short section on Python version compatibility in the
backward compatibility docs.
Follow-up to #9309.
The issue in the changelog broke the docs build with:
doc/en/_changelog_towncrier_draft.rst:47: WARNING: Inline literal start-string
without end-string.
The second change isn't as critical, but caused the text to be rendered as
monospace including the tilde (i.e. `~pytest.PytestDeprecationwarning`).
Closes#7480.
This allows us to more easily follow our deprecation policy of turning
warnings into errors for the X.0 releases before complete removal in
X.1.
It also makes the deprecation timeline clear to both the users and
pytest developers -- it can be hard to keep track.
Note that the designation is not meant to be a binding contract - if the
time comes for removal of a specific deprecation but we decide it's too
soon, can just bump it to the next major.
Inspired by Django:
https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/submitting-patches/#deprecating-a-feature
Co-Authored-By: Anthony Sottile <asottile@umich.edu>
Co-Authored-By: Bruno Oliveira <nicoddemus@gmail.com>
Co-Authored-By: Hugo van Kemenade <hugovk@users.noreply.github.com>