[gnome-maps] (5 commits) Non-fast-forward update to branch wip/mlundblad/es6

[Marcus Lundblad <mlundblad src gnome org>]

The branch 'wip/mlundblad/es6' 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:

  d310387... configure.ac: Bump GJS dependency
  d6d9ab8... WIP: Use ES6 arrow notation
  670d10d... WIP: Use ES6 classes with GObject extensions

Commits added to the branch:

  5609c59... maps-service: Add tile provider info for fallback (*)
  a3c7609... mainWindow: Show OSM and tile provider credits (*)
  31d58a4... configure.ac: Bump GJS dependency
  145be85... WIP: Use ES6 arrow notation
  7715092... WIP: Use ES6 classes with GObject extensions

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