[Cython] can we deprecate for-from loops?

[Stefan Behnel]

Hi!

The syntax construct "for i from 0 <= i < 10" has been silently outdated
for years. Can we start issuing a warning that normal range() loops are
preferred?

While I don't see it going to go away any time soon, I'd like to make users
aware that it's an unnecessary syntax wart that's best avoided and that
should really not be used in new code.

Stefan