- Update README-PACKAGERS doc to reflect naming and notes about compatibility + we no longer use and ship .desktop files
- PC file: add explicit Qt5Widgets deps, library -> framework
- Bump soname to separate from incompatible 3.0 branch
- adds PROJECT_STABLE_VERSION_MAJOR to the lib name
- sets VERSION to PROJECT_STABLE_VERSION_MAJOR.PROJECT_STABLE_VERSION_MINOR.PROJECT_STABLE_VERSION_PATCH
- sets SOVERSION to PROJECT_STABLE_VERSION_MAJOR (special case for 3.0 < PROJECT_STABLE_VERSION < 4.0: sets SOVERSION to PROJECT_STABLE_VERSION_MAJOR + 1 to separate from incompatible version 3.0)
This is a template for other KEXI libs too.