[gtksourceview] (8 commits) Non-fast-forward update to branch wip/metadata

[Sébastien Wilmet <swilmet src gnome org>]

The branch 'wip/metadata' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  59331d6... File: add get/set_metadata()
  5dd76aa... FileLoader: load metadata
  fc833dd... FileSaver: save metadata
  deed37b... FileSaver: add flag to not save metadata
  3241b36... FileSaver: add save_metadata(), sync and async versions
  fb1c90f... FileLoader: add load_metadata(), sync and async versions
  090afa6... FileLoader: add flag to not load metadata

Commits added to the branch:

  1511dae... FileLoader: add missing g_returns (*)
  f054bbf... File: add get/set_metadata()
  f26152b... FileLoader: load metadata
  94a25fb... FileSaver: save metadata
  754ba2f... FileSaver: add flag to not save metadata
  921cf84... FileSaver: add save_metadata(), sync and async versions
  b3df2cf... FileLoader: add load_metadata(), sync and async versions
  568cfa2... FileLoader: add flag to not load metadata

(*) This commit already existed in another branch; no separate mail sent