docs: Mention popovers in the migration guide
authorMatthias Clasen <mclasen@redhat.com>
Tue, 28 Sep 2021 19:47:06 +0000 (15:47 -0400)
committerMatthias Clasen <mclasen@redhat.com>
Sun, 31 Oct 2021 21:52:04 +0000 (17:52 -0400)
commit16c3864e4a1205b23bdad56decd18bdd24a92dce
tree300950a09ff71337d95306ba9ae990b6ce0d0d24
parent1fa97e1808240b5350cc186e7b11535834175b8b
docs: Mention popovers in the migration guide

Things have changed around popovers, we should mention
that.
docs/reference/gtk/migrating-3to4.md