GResource entries are split into two files:
- `bottles.gresource.xml` remains the GResource file for UI
files and CSS, with everything else removed.
- `data.gresource.xml` is being introduced for anything related
to data, such as icons, and in the future
`Adw.AboutDialog.new_from_appdata ()`.
Most unneeded icons, for instance `data/icons/*/48`, have been
removed. They served no purpose whatsoever, so there's no
point in keeping them.
Every XML-like file runs through a preprocessor to make them
take less space.
Hari Rana