Release to unstable

debian/changelog

@@ -1,4 +1,4 @@
-ostree (2019.6-1) UNRELEASED; urgency=medium
+ostree (2019.6-1) unstable; urgency=medium
 
   * New upstream release
     - d/libostree-1-1.symbols: Update
@@ -6,7 +6,7 @@ ostree (2019.6-1) UNRELEASED; urgency=medium
     cross-architecture testing support
   * d/tests: Make tests shellcheck-clean
 
- -- Simon McVittie <smcv@debian.org>  Sat, 14 Dec 2019 10:52:40 +0000
+ -- Simon McVittie <smcv@debian.org>  Sat, 14 Dec 2019 11:30:10 +0000
 
 ostree (2019.5-1) unstable; urgency=medium