Update changelog for 1.8.

debian/changelog

-tails (1.8) UNRELEASED; urgency=medium
+tails (1.8) unstable; urgency=medium
 
-  * Dummy entry.
+  * Security fixes
+    - Upgrade Tor to 0.2.7.6-1~d70.wheezy+1+tails1.
+    - Upgrade Tor Browser to 5.0.5. (Closes: #10223)
+
+  * Bugfixes
+    - Upgrade to Electrum 2.5.4-2~d70.wheezy+1+tails1. Now Electrum
+      should work again. Note that the documentation has not been
+      adapted to the slight changes in the Electrum account setup
+      wizard yet.
+
+  * Minor improvements
+    - Upgrade I2P to 0.9.23-2~deb7u+1.
+    - Rebase our patch against the Tor Browser AppArmor profile on top
+      of the one shipped in torbrowser-launcher 0.2.1-2.
+    - Warn if the claws-mail persistence is enabled and contains a
+      Claws Mail configuration when starting icedove. (Closes: #10458)
+    - Replace the Claws Mail GNOME launcher with Icedove. (Closes:
+      #10739)
+    - Remove the Claws Mail persistence feature from the Persistence
+      Assistant. (Closes: #10742)
+
+  * Build system
+    - Simplify ISO image naming rules by using the base rule we use
+      for Jenkins all the time, except when building from a tag
+      (i.e. building a release).  (Closes: #10349)
 
- -- anonym <anonym@riseup.net>  Wed, 18 Nov 2015 20:22:23 +0100
+  * Test suite
+    - Lower the waiting time for USB installation in the test suite.
+      So far we were waiting up to one hour, which is just the same as
+      our Jenkins inactivity timeout, so in practice when Tails
+      Installer fails and displays an error message, instead of
+      reporting that the job failed (which is the point of the
+      exercise) we abort the job due to this timeout which
+      communicates less clearly that there's probably a bug. (Closes:
+      #10718)
+    - Remove the check for the sound icon in the systray in the
+      Windows Camouflage tests. (Closes: #10493)
+    - Retry running whois when "LIMIT EXCEEDED" is in its output for
+      increased robustness. (Closes: #10523)
+    - Make Seahorse tests more robust. (Closes: #9095, #10501)
+    - Make the handling of Pidgin's account manager more robust.
+      (Closes: #10506)
+
+ -- Tails developers <tails@boum.org>  Mon, 14 Dec 2015 23:07:19 +0100
 
 tails (1.7) unstable; urgency=medium