[VOTE] Deprecate partially supported callables View as Markdown

Hi internals!

I've opened voting on
https://wiki.php.net/rfc/deprecate_partially_supported_callables, which
deprecated callables that are not supported in $callable() syntax. The vote
closes on 2021-10-22.

The proposal has been accepted unanimously, with 32 votes in favor.

Regards,
Nikita