Move to KDE runtime 5.15 and Qt 5.15; clean some whitespace.
I haven't tested this, but the Skrooge Flatpak on flathub builds against 5.15.
The flathub Flatpak has other updated dependencies, e.g. eliminated the patch to gengetopt's Makefile
I haven't tested this, but the Skrooge Flatpak on flathub builds against 5.15.
The flathub Flatpak has other updated dependencies, e.g. eliminated the patch to gengetopt's Makefile