Run LÖVE games with the LÖVE version they expect
Migrated from https://bugzilla.gnome.org/show_bug.cgi?id=778594
The LÖVE API is (or at lest has been) extremely unstable which is very unconvenient for users as they can't just double click their .love file and expect the game to work.
We should fix that by running LÖVE games with the version they expect, which is typically found in the /conf.lua file of the .love archive (actually a .zip) as a line looking like
t.version = "0.9.2".
A solution could be to ship a tool to automatically flatpak the LÖVE games with their corresponding LÖVE version and run the resulting flatpak.