Update debian/changelog with recent changes.

debian/changelog

@@ -23,6 +23,11 @@ tails (2.0~beta1) UNRELEASED; urgency=medium
       take a while.
     - Allow Totem to read DVDs, by installing apparmor-profiles-extra
       from jessie-backports (Closes: #9990).
+    - Make memory erasure on shutdown more robust (Closes: #9707, #10487):
+      · don't forcefully overcommit memory
+      · don't kill the allocating task
+      · make sure the kernel doesn't starve from memory
+      · make parallel sdmem handling faster and more robust
 
   * Minor improvements
     - Remove obsolete code from various places.
@@ -378,8 +383,11 @@ tails (2.0~beta1) UNRELEASED; urgency=medium
       automatically (Closes: #10609).
     - Have systemd hardening let Tor modify its configuration (needed by Tor
       Launcher), and start obfs4proy (Closes: #10696, #10724).
+    - Bump extensions.adblockplus.currentVersion and
+      extensions.enigmail.configuredVersion to match what we currently get
+      on Jessie.
 
- -- Tails developers <tails@boum.org>  Thu, 19 Nov 2015 16:01:19 +0000
+ -- Tails developers <tails@boum.org>  Sun, 20 Dec 2015 14:00:07 +0000
 
 tails (1.8.1) unstable; urgency=medium