0.15.3

Andrey Kutejko (1):
      glib-macros: Remove redundant allocations

Andy Russell (1):
      glib: implement To/FromVariant for OS strings and paths (#483)

Paolo Borelli (1):
      glib: Add more documentation on how to replace g_signal_connect_object

Sebastian Dröge (5):
      glib: Add an object builder
      glib: Provide `ThreadGuard` and `thread_id()` as public API
      gio: Use `ThreadGuard` from glib instead of providing a separate implementation
      Update versions to 0.15.3

ranfdev (2):
      glib-macros: use bool::then in subclass macro
      glib-macros: reduce subclass macro size