Docs: include Since and deprecated versions, put [Deprecated] tags
Docs: include Since and deprecated versions, put [Deprecated] tags

...into struct and trait docs.
Drop alias docs.

EPashkin/gir,GuillaumeGomez/gir,gkoz/gir,GuillaumeGomez/gir,gtk-rs/gir,gkoz/gir,gtk-rs/gir,GuillaumeGomez/gir,EPashkin/gir,gtk-rs/gir