docs: Mention subclassing and destroy in the migration guide
authorMatthias Clasen <mclasen@redhat.com>
Tue, 20 Oct 2020 22:26:38 +0000 (18:26 -0400)
committerMatthias Clasen <mclasen@redhat.com>
Tue, 20 Oct 2020 22:26:38 +0000 (18:26 -0400)
commit6a1cb3304b0abf3d20541c48f889c4bbc6fa776f
treea948bf6382f5653ab793db96041dfd9fc64d29d5
parent45400fe381aed8789ae53d75d4222132454e7001
docs: Mention subclassing and destroy in the migration guide

Mention changes regarding subclassing and life-cycle
handling in the migration guide.
docs/reference/gtk/migrating-3to4.md