Merge branch 'debian/experimental' into debian/master

debian/changelog

@@ -1,3 +1,15 @@
+ostree (2018.5+42+gecdebeb2-1) UNRELEASED; urgency=medium
+
+  * Switch to experimental branch
+  * New upstream git snapshot with support for peer-to-peer software
+    collections, required by Flatpak's peer-to-peer app sharing feature
+    - d/copyright: Update
+    - d/libostree-1-1.symbols: Update
+    - Build-depend on Avahi libraries
+  * d/rules: Explicitly enable various desired libraries
+
+ -- Simon McVittie <smcv@debian.org>  Fri, 08 Jun 2018 09:10:21 +0100
+
 ostree (2018.5-2) unstable; urgency=medium
 
   * d/tests/gnome-desktop-testing: Skip libostree/test-concurrency.py.test