[doc/changelog] the removal of next_tabindex produce an error not in the changelog
When one tried to migrate to 3.25, the error "class X initialization doesn't
have a settabindex argument" can happen but the word "settabindex" is not
present in the changelog which makes it hard to find to which modification this
error is related.
Release notes
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.. toctree::
:maxdepth: 1
3.25
3.24
3.23
3.22
3.21
3.20
3.19
3.18
3.17
3.16
3.15
3.14