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.
The projects page unfortunately contains a lot of old projects, and some information there appears to be stale.
It was created at a time pytest was starting to be used, but seems pointless now as pytest is the most popular testing framework, so listing a few dozen projects which use it seems pointless.
Rather than updating it, I think we should remove it because this has the chance to become stale again soon, and not sure how valuable it is anyway.
Sections have been moved to:
* reference/fixtures.rst
* how-to/fixtures.rst
* fixtures.rst
according to their function. Further refinement and rewriting will be required.
Some material has been moved to a new "Anatomy of a test" document, in
anticipation that material from other sections will also find a natural
home there later.
Removed several unneeded reference targets from fixtures documentation.
Moved various documents into subdirectories, how-to and
reference.
Updated multiple links to use `:ref:` instead of `:doc:`,
meaning that files can henceforth be moved around without
breaking references.
Tidelift has launched a new marketing campaign as outlined here:
* https://forum.tidelift.com/t/task-enhancement-marketing-the-tidelift-subscription-to-your-users/321
This PR splits the previous "sponsor" information into two, Open Collective
and Tidelift (as they have very different target audiences).
Also took the opportunity to reorder some items at the end of
the contents page in a manner that I believe make more sense.
* Changed "index" to be more similar to the README (#1708).
* Fixes numerous issues like missing documents, syntax errors, etc (#1829, #432).
* Mention all docs in "contents.rst" so it's easier for users to locate (#1112).
* Add doc generation and checking to Travis and AppVeyor, to avoid re-introducing errors.
Fixes#432, Fixes#1112, Fixes#1708, Fixes#1829