Restore AMTK from the archives and update to 5.6.1

[Douglas R. Reno]

Restore AMTK from the archives and update to 5.6.1 for gedit.

[Douglas R. Reno]

The last version we had in the book was 5.2.0.

5.3.1

News in 5.3.1, 2021-01-11
-------------------------
* Build: port to Meson, remove Autotools.
* Translation updates.

5.3.2

News in 5.3.2, 2022-04-18
-------------------------
* The project is now hosted here: https://gitlab.gnome.org/swilmet/amtk
* Some files reorganization within the git repository.
* Update the README.md file, etc.
* Some code refactorings, it's now easier to copy part of the code (e.g., just
  one class) to another project.
* Mark public API with G_MODULE_EXPORT, not the custom _AMTK_EXTERN macro.
* REUSE way of applying licenses, and update license from LGPLv2.1+ to LGPLv3+.
* Translation updates.

5.4.0

News in 5.4.0, 2022-05-02
-------------------------
* Nothing.

5.4.1

News in 5.4.1, 2022-05-25
-------------------------
* Build system: check if compiler supports --version-script linker option.
* Documentation improvements.

5.5.1

News in 5.5.1, 2022-06-10
-------------------------
* The project is now hosted here: https://gitlab.gnome.org/World/amtk
* Add a utils function.
* Other minor improvement.

5.5.2

News in 5.5.2, 2022-10-24
-------------------------
* Add a function in AmtkApplicationWindow.
* Build: fix a warning.

5.6.0

News in 5.6.0, 2022-11-02
-------------------------
* No changes.

5.6.1

News in 5.6.1, 2022-11-17
-------------------------
* Revert unintentional soname bump, set 'soversion' back to 0.

[Douglas R. Reno]

Fixed in the following commits:

04a96ab943 Update to file-roller-43.0
d012172dab Update to gnome-calculator-43.0.1
13a0661bc2 Update to gnome-disk-utility-43.0
db17f83eef Update to gnome-logs-43.0.
7276f66872 Add the xinclude for meson buildtype=release to baobab.
e6ed4c37b0 Add libshumate to the book in support of gnome-maps.
8f4ea2bec0 Update to gnome-maps-43.2
a3d61dab87 Archive folks.
bb2c31f9ca Update to gnome-power-manager-43.0
0235588e2a Update to gnome-terminal-3.46.7
8fbb2ce26d Update to gnome-weather-43.0
885fdbafaa Update to gucharmap-15.0.2
adaaba28fa Resurrect amtk in support of gedit.
8d8b9ff434 Update to amtk-5.6.1
721e696eb3 Resurrect tepl in support of gedit.
a3717a9737 Update to tepl-6.2.0
c517fd0a5a Update to gedit-43.2
afe28f4662 Minor cleanup - remove unneeded gnome-minor entities, and fix the URL in file-roller.