gplugin/gplugin

Bump the minimum meson to 0.56, fix deprecations, and start using summary()

2021-07-27, Gary Kramlich
b270797db56a
Bump the minimum meson to 0.56, fix deprecations, and start using summary()

Testing Done:
Ran `meson --wipe` with options toggled. See https://asciinema.org/a/QyLyX1lAchqLu6NcA2J5iBhFl

Reviewed at https://reviews.imfreedom.org/r/849/
The following individuals have contributed to this project.
Ankit Vani <a@nevitus.org>
EionRobb <eion@robbmob.com>
Elliott Sales de Andrade <quantum.analyst@gmail.com>
Gary Kramlich <grim@reaperworld.com>
Jason Scherer <schereja@gmail.com>
John Bailey <rekkanoryo@rekkanoryo.org>
Mike Ruprecht <cmaiku@gmail.com>
Olaf Hering <olaf@aepfle.de>
Richard Laager <rlaager@pidgin.im>
Sorvival <sorvival@tutanota.com>