A new unstable development release of Shotwell has been released

Notable changes:
* GIF support
* Meson-only build system
* GTK+-3 requirement bumped to 3.22

Due to the GTK+ requirement update, this series will not be available
on Ubuntu 16.04 in the PPA.

Other changes since 0.28.0:

* Fix an issue with undefined symbols with certain compilers
* Remove autotools supports
* Add GIF support (read-only, animations not supported)
* Bump GTK requirement to 3.22 and remove deprecated function calls
* Change some internal drawing to use GTK+ API instead of using Cairo
directly
* Add import rolls
* Minor visual improvements
* Dead code and asset removal

Bugs fixed in this release:
- https://bugzilla.gnome.org/show_bug.cgi?id=716284
- https://bugzilla.gnome.org/show_bug.cgi?id=717833
- https://bugzilla.gnome.org/show_bug.cgi?id=718742
- https://bugzilla.gnome.org/show_bug.cgi?id=772339
- https://bugzilla.gnome.org/show_bug.cgi?id=783268
- https://bugzilla.gnome.org/show_bug.cgi?id=794293
- https://bugzilla.gnome.org/show_bug.cgi?id=794456
- https://bugzilla.gnome.org/show_bug.cgi?id=794673

All contributors to this release:
- Jens Georg
- Piotr Drąg
- Jens Georg
- gogo
- Rüdolfs Mazurs
- Marek Černocký
- Josef Andersson
- Boyuan Yang
- Alan Mortensen

Added/updated translations
- cs, courtesy of Marek Černocký
- da, courtesy of Alan Mortensen
- hr, courtesy of gogo
- lv, courtesy of Rūdolfs Mazurs
- pl, courtesy of Piotr Drąg
- sv, courtesy of Josef Andersson
- zh_CN, courtesy of Boyuan Yang
Shotwell 0.29.1 is available for download at

https://download.gnome.org/sources/shotwell/0.29/shotwell-0.29.1.tar.xz

  Shotwell 0.29.1 released