[PR #405] Import pre-Boost history of GIL by Adobe to release notes

From: Mateusz Loskot (mateusz_at_[hidden])
Date: 2019-11-26 00:17:55

Hi,

Those interested in GIL archeology may find this overhaul interesting :-)

https://github.com/boostorg/gil/pull/405

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