Fetch new unstable tags

See merge request !154

Don't suggest use of deprecated `G_APPLICATION_FLAGS_NONE`

See merge request !150

Fix broken links in README.md

See merge request !153

GTK 4.9 is now out.

New social network!

Update the MSYS2 command in of Windows

See merge request !147

Remove superfluous 's' and add grammar commas

See merge request !145

Change the latest stable release

See merge request !148

We're now at 4.8.

Update deprecated ` to $()

See merge request !146

https://mywiki.wooledge.org/BashFAQ/082

Remove glade

See merge request !143

Improve filters for stable/unstable/oldstable tags

See merge request !137

We're at 4.6/4.7.

We should use proper filters instead of simply getting the
first element in the array.

Additionally, for unstable tags we should conditionally show
the whole block, in case we haven't branched yet.

Remove outdated link

Closes #88

See merge request !133

Use docs.gtk.org instead of developer.gnome.org.

Use developer-old.gnome.org until we find a new home for the Vala
documentation.

Use developer-old.gnome.org until we find a new home for the gtkmm
documentation.

The "getting started" link should point to GTK4 and docs.gtk.org.

The GNOME development demos are outdated, and not what we want to show
to newcomers.

Fixes: #88

Newer Icon assets

See merge request !128

Refer to libgtk-4-1 instead of old libgtk-4-0

See merge request !132

libgtk-4-0 is not packaged on Ubuntu, and on Debian (experimental
channel) it refers to an in-development version 3.91.2.
libgtk-4-1 refers to an real 4.x release which is more useful.

Totally not nudged by Emmanuele Bassi on Matrix.
Also arunkumar413 on Matrix totally did not made me look at package
listings.

Show latest GTK3 release

See merge request !131

Update latest tags

See merge request !130

Change to reflect the availability of gtk4 for go

See merge request !129