Update changelog for 3.6~rc1.

debian/changelog

-tails (3.6) UNRELEASED; urgency=medium
+tails (3.6~rc1) unstable; urgency=medium
 
-  * Dummy entry for next release.
+  * Major changes
+    - Upgrade Tor to 0.3.2.9. (Closes: #15158)
+    - Add ability to lock the screen (Closes: #5684)
+    - Add support for meek_lite bridges. (Closes: #8243)
+    - Upgrade to Thunderbird 52.6.0. (Closes: #15298)
+    - Enable Thunderbird AppArmor profile. (Closes: 11973)
+    - Upgrade Linux to 4.15.0-1. (Closes: #15309).
+    - Upgrade Systemd to v237.
+    - Upgrade Electrum to 3.0.6. (Closes: #15022)
+    - Port most of Tails shell scripts to Python thanks to
+      GoodCrypto. (Closes: #11198)
+
+  * Security fixes
+    - Upgrade Intel processor microcode firmware. (Closes: #15173).
+    - Create tails-upgrade-frontend's trusted GnuPG homedir with stricter
+      permissions, then make it looser. (Closes: #7037)
+    - Upgrade poppler to 0.48.0-2+deb9u1. (CVE-2017-14929, CVE-2017-1000456)
+    - Upgrade tiff to 4.0.8-2+deb9u2 ( CVE-2017-9935, CVE-2017-11335,
+      CVE-2017-12944, CVE-2017-13726, CVE-2017-13727, CVE-2017-18013)
+    - Upgrade ffmpeg to 7:3.2.10-1~deb9u1. (CVE-2017-17081)
+    - Upgrade libtasn1-6 to 4.10-1.1+deb9u1. (CVE-2017-10790, CVE-2018-6003)
+    - Upgrade Libre Office to 1:5.2.7-1+deb9u2. (CVE-2018-6871)
+    - Upgrade libvorbis to 1.3.5-4+deb9u1. (CVE-2017-14632, CVE-2017-14633
+    - Upgrade gcc to 6.3.0-18+deb9u1.
 
- -- Tails developers <tails@boum.org>  Tue, 09 Jan 2018 21:30:54 +0100
+  * Minor improvements
+    - Drop (broken) Thunderbird dedicated SocksPort. (Closes: #12460)
+    - Drop customized update-ca-certificates.service. (Closes: #14756)
+    - Update AppArmor cupsd profile. (Closes: #15029)
+    - Improve UX when GDM does not start. (Closes: #14521)
+    - Install packages needed to support Video Acceleration API.
+      (Closes: #14580)
+    - Upgrade aufs-dkms for Linux 4.15. (Closes: #15132).
+    - Ship pdf-redact-tools, thanks to dachary <loic@dachary.org>.
+      (Closes: #15052)
+    - Additional Software Packages: convert to python3 and PEP-8.
+      (Closes: #15198)
+    - Additional Software Packages: do not check for updates every time the
+      network gets reconnected. (Closes: #9819)
+    - Revert to xorg-xserver from Stretch. (Closes: #15232)
+    - Open Tails documentation in Tor Browser when online. (Closes: #15332)
+    - Disable Enigmail's Memory Hole feature. (Closes: #15201)
+    - Persistence Setup: stop depending on Synaptic. (Closes: #15263)
 
-tails (3.5.1) UNRELEASED; urgency=medium
+  * Bugfixes
+    - Additional Software Packages: fix the "incomplete online upgrade
+      process" bug in offline mode (Closes: #14570)
+    - Additional Software Packages: do not block Desktop opening.
+      (Closes: #9059)
+    - Install OpenPGP Applet 1.1. (Closes: #6398).
+    - Repair rng-tools using a real start-stop-daemon program.
+      (Closes: #15344)
+    - Tails installer: fix bug with unicode status messages. (Closes: #15254)
 
-  * Dummy entry for potential emergency release.
+  * Build system
+    - Abort if tails-custom-apt-sources failed.
+    - Abort the ISO build when DKMS modules are not built. (Closes: #14789).
+    - Improve how we use dependency hooks. (Closes: #14818)
+    - Fix (potential) rare race condition during build.
+    - Ensure the SquashFS has /etc/hostname properly configured.
+      (Closes: #15322)
+    - Bump builder VM's RAM. (Closes: #15310)
 
- -- Tails developers <tails@boum.org>  Tue, 23 Jan 2018 01:33:25 +0100
+  * Test suite
+    - Log the list of systemd jobs when systemctl is-system-running fails.
+      (Closes: #14772).
+    - Allow more time for 'systemctl is-system-running' to succeed.
+    - Only support SikuliX, not Sikuli.
+    - Disable SPICE clipboard sharing.
+    - Don't flood the debug logger with the journal contents.
+    - Rescue exception.
+    - Enter a name into the Thunderbird account configuration.
+      (Closes: #11256)
+    - Fix the "I do not see ..." step's case. (Closes: #14929)
+    - Mark scenarios that use the "The Report an Error launcher will…" step
+      as fragile (Closes: #15321)
+    - Test that Tor Browser opens docs when online. (Closes: #15332)
+    - Adapt test after warning moved to after Unsafe Browser verification
+      dialog. (Closes: #8775)
+    - Dogtailify electrum.feature.
+    - Add additional software packages feature. (Closes: #14572)
+    - Disable test that is broken due to a Tor Browser bug. (Closes: #15336)
+
+ -- Tails developers <tails@boum.org>  Thu, 01 Mar 2018 22:54:30 +0100
 
 tails (3.5) unstable; urgency=medium