There is no way to do object bindings to termprops, so just ignore these
for now because we'd end up doing the exact same thing.

And squash the deprecation warning while we're at it.

Now that we have commit notifications at the GtkTextBuffer level, we no
longer need the same sort of solution in Builder.

Just delete it all and use the GtkTextBuffer variant.

We don't want to iterate the threads main context or we will have other
code re-entrant here. Instead just create a new main loop for the operation
and iterate that.

Now that libspelling has matured a bit and is using threaded spellcheck,
lets move Builder over to it so we get a lot of nightly testing.

We can rely on this from the SDK now.

Update POTFILES.in

See merge request GNOME/gnome-builder!818

We don't use this anywhere anymore, so just delete it and all the
non-portable GtkFileChooser code with it.

AdwAboutWindow is deprecated.

We don't do it for other languages, remove it for C and Rust too.

App templates updates

See merge request GNOME/gnome-builder!819

plugins/meson-templates: Fix gtk-rs features

See merge request GNOME/gnome-builder!820

metainfo: Add HW info and brand colors

See merge request GNOME/gnome-builder!821

This can be used for other plugins to do the same sort of rewriting we do
for the Flatpak plugin.

Related: #2421

This is helpful so you can use the inspector mostly.

Again, these are handy to have access to from the inspector.

That way you can just include the headers and use real type checks.

Related: GNOME/epiphany#2421

We don't use Python as our scripting language so these can be dropped.

If there is no workdir specified, we should default to running from the
build directory.

Fixes: #2243

Fixes: #2245

This shouldn't be necessary anymore

Applies the same treatment for #2245 to the editor workspace.

This copies various translated strings, but they are identical and
therefore should not require additional translation.

Previously, it was doable only by the mouse.
Now, it can be done using Ctrl+Space.

Setting the state has the side effect which marks the object as expandable,
so the collapsed objects are reported properly.

ide tree a11y improvements

See merge request GNOME/gnome-builder!822

and drop the forced sizing information