Lagrange [release]

Merge branch 'dev' into release

Sat May 29 17:22:43 2021 +0300

Conflicts:

CMakeLists.txt

res/about/version.gmi

res/fi.skyjake.Lagrange.appdata.xml

res/lang/sr.bin

src/gmdocument.c

src/ui/sidebarwidget.c

src/ui/widget.c

src/ui/window.c