Paolo Borelli:
glib-macros: do not emit deprecation warnings for old clone! and closure! in 0.19
glib-macros: make new clone! and closure! syntax a feature
glib-macros: restore stable documentation of clone! and closure!
glib-macros: make tests for new clone! conditional as well
glib: stick to the old clone syntax
Sebastian Dröge:
Update `clone!` and `closure!` macro to new syntax
glib-macros: Fix unit return in `closure!()` macro
glib-macros: Don't produce unnecessary braces in `clone!(async move { x })`
glib-macros: Fix clone tests to work with both the unstable syntax enabled and not
Update Cargo.lock
Update versions to 0.19.9
glib: Depend on glib-macros 0.19.9 for the new feature
