2.68.1 (stable):
Glib:
* Variant: Fix template constructors so they work with C++20
Build:
* Meson build: Use relative paths to untracked/
* [gio|glib]mmconfig.h.*: Don't dllimport on MinGW
* Meson build: examples and tests: Add dependency('threads')
* Meson build: Make it possible to use glibmm as a subproject
* Meson build: No implicit_include_directories
* Meson build: Make quiet installations possible
* MSVC build: Avoid exporting classes with std::string members
Tests:
* glibmm_ustring_compare: Fix so it works for C++20
476ec7b0e8