Your suggestion is not unreasonable my any means. Yes, it's not hard to test
(and include) the header, but it's unnecessary according to the documentation.

I'll repeat my request - please update documentation, provide warnings and
deprecation _period_. Do not just remove the include and then point fingers at
projects because "they're not doing X" when there is no official information
that say they should :-)

TL DR; as soon as the manual is updated I'll be more than happy to get this in.