Adding this as the "collector" bug for version updates for the GNOME stack.

First candidate:

Gnome Photos (gnome-photos-3.16.3.tar.xz)

Overview of changes in 3.16.3
=============================

* Bugs fixed:
 688566 offset-controller: Prevent loading more items than there actually is
 725508 Can not handle window manager's unfull/full screen operation
 734766 properties-dialog: Be more forgiving of unknown nmm:flash values
 741593 No pagination buttons when previewing search results
 746104 Fix the lifetime of the signal handlers
 751106 Make favorite button's icon retain the active color
 756131 Disable can-fullscreen when going back, and simplify the state
        changes / signal emissions
 756221 Disabling application menu adds a redundant toolbar
 757015 Improve the responsiveness of the favorite button
 757199 Crash when quitting due to the ViewModel outliving the Embed

* Updated translations:
 Occitan
 Portuguese