[gil] Phasing out support C++11 and switching to C++17

From: Mateusz Loskot (mateusz_at_[hidden])
Date: 2020-10-26 09:37:42

Hi,

We're discussing [1] to start switching GIL to C++17
in the near future and, following Peter Dimov's policy
on phasing out C++XY support [2], we'd like to:

1. Declare C++11 support deprecated in 1.75 (December 2020)
2. Drop C++11 support in 1.77 (?)  (August 2021)

Could anyone help us validate and confirm that
it's a good plan or are we overlooking any policies
from Boost's release perspective?

[1] https://lists.boost.org/boost-gil/2020/10/0465.php
[2] https://pdimov.github.io/articles/phasing_out_cxx03.html

Best regards,
-- 
Mateusz Loskot, http://mateusz.loskot.net