Release to experimental

debian/changelog

@@ -1,12 +1,15 @@
-ostree (2021.3-1) UNRELEASED; urgency=medium
+ostree (2021.3-1) experimental; urgency=medium
 
   * New upstream release
     - Increase build-dependency to GLib 2.44
     - d/libostree-1-1.symbols: Update
+    - Drop patches that were applied upstream
   * Re-enable gjs tests on architectures where it is available
   * d/libostree-1-1.symbols: Remove a duplicate symbol
+  * d/test.sh, d/tests: Unset SOURCE_DATE_EPOCH.
+    Otherwise, some tests will think we're downgrading, and fail.
 
- -- Simon McVittie <smcv@debian.org>  Sun, 25 Jul 2021 19:02:39 +0100
+ -- Simon McVittie <smcv@debian.org>  Sun, 25 Jul 2021 19:18:51 +0100
 
 ostree (2021.2-2) experimental; urgency=medium