[1.8.x] Fixed #23892 -- Clarified compatibility policy for migrations.
[1.8.x] Fixed #23892 -- Clarified compatibility policy for migrations.

Backport of e35c70bef44805d47f6a4ae692be878184c4fe1f from master

pquentin/django,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,pquentin/django,h4r5h1t/django-hauthy,pquentin/django