docs: Mention <packing> in migration guide
authorMatthias Clasen <mclasen@redhat.com>
Fri, 4 Jun 2021 11:41:25 +0000 (07:41 -0400)
committerMatthias Clasen <mclasen@redhat.com>
Fri, 4 Jun 2021 11:59:07 +0000 (07:59 -0400)
commitc4cbd6ec1b3cec362f2e04c5ea2a0beb082cc47b
tree90774c596bf1c9f205df54336427b3086bd40b9d
parent036dd60a4ecfadecc8c8ffdc624623a081658acd
docs: Mention <packing> in migration guide

Add another hint for what to do with child properties.

Fixes: #3950
docs/reference/gtk/migrating-3to4.md