[gnome-builder] update release notes

[Christian Hergert <chergert src gnome org>]

commit 44d37ef0711309f8336299656fd9a28c7b1f6055
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jan 6 18:19:15 2018 -0800

    update release notes

 NEWS                                  |   38 +++++++++++++++++++++++++++++++++
 data/org.gnome.Builder.appdata.xml.in |   28 ++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 599f077..5fca365 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,42 @@
 ==============
+Version 3.27.4
+==============
+
+Changes since last release:
+
+ • A new IdeVcsMonitor interface provides status tracking for project files.
+   This can be used to show the status in the project tree.
+ • The editor supports Drag'n'Drop to open files, also allowing placement of
+   the editor frame to the left/right/top/bottom of an existing editor frame.
+ • A new message pane allows plugins to deliver information to users,
+   particular about failures which would otherwise be silently dropped to
+   the console. It is hidden until the first message is displayed.
+ • A number of improvements to subsystems for better error tracking, memory
+   leaks, and correctness fixes.
+ • Save-All shortcut has been fixed.
+ • The “hamburger” menu has been hidden by default, but will automatically
+   display if any plugins end up using it. Currently, all plugins have
+   removed their use of it.
+ • Fullscreen now has a top-level button.
+ • Newcomers greeter section now displays the included programming languages
+   to help guide developers to projects they may want to contribute to.
+ • The omnibar now includes a button to download dependencies.
+ • Unit tests are reloaded whenever the build pipeline is updated.
+ • Symbol Tree will now more reliably show document contents.
+ • Builder can now chain GCancellables together, meaning more reliable
+   cancellation of complex operations such as project building.
+ • The build status panel can now display the build pipeline stages and
+   update them as the build progresses.
+ • The Clang plugin will more reliably work when used to build against
+   a host system from Builder shipped via Flatpak.
+ • Support for LLVM 5.0.
+ • Various compilation fixes for FreeBSD.
+
+Updated Translations:
+
+  Serbian, German, Czech, Spanish, Turkish, Friulian
+
+==============
 Version 3.27.3
 ==============
 
diff --git a/data/org.gnome.Builder.appdata.xml.in b/data/org.gnome.Builder.appdata.xml.in
index 99dab6b..e82d048 100644
--- a/data/org.gnome.Builder.appdata.xml.in
+++ b/data/org.gnome.Builder.appdata.xml.in
@@ -81,6 +81,34 @@
   <translation type="gettext">gnome-builder</translation>
 
   <releases>
+
+    <!-- release version="3.27.4" date="2018-01-08">
+      <description>
+        <p>
+          A number of performance improvements and bug fixes have landed in this release.
+          Notably, the projcet tree now supports displaying status from the Version Control System.
+        </p>
+        <ul>
+          <li>A new IdeVcsMonitor interface provides status tracking for project files. This can be used to 
show the status in the project tree.</li>
+          <li>The editor supports Drag'n'Drop to open files, also allowing placement of the editor frame to 
the left/right/top/bottom of an existing editor frame.</li>
+          <li>A new message pane allows plugins to deliver information to users, particular about failures 
which would otherwise be silently dropped to the console. It is hidden until the first message is 
displayed.</li>
+          <li>A number of improvements to subsystems for better error tracking, memory leaks, and 
correctness fixes.</li>
+          <li>Save-All shortcut has been fixed.</li>
+          <li>The “hamburger” menu has been hidden by default, but will automatically display if any plugins 
end up using it. Currently, all plugins have removed their use of it.</li>
+          <li>Fullscreen now has a top-level button.</li>
+          <li>Newcomers greeter section now displays the included programming languages to help guide 
developers to projects they may want to contribute to.</li>
+          <li>The omnibar now includes a button to download dependencies.</li>
+          <li>Unit tests are reloaded whenever the build pipeline is updated.</li>
+          <li>Symbol Tree will now more reliably show document contents.</li>
+          <li>Builder can now chain GCancellables together, meaning more reliable cancellation of complex 
operations such as project building.</li>
+          <li>The build status panel can now display the build pipeline stages and update them as the build 
progresses.</li>
+          <li>The Clang plugin will more reliably work when used to build against a host system from Builder 
shipped via Flatpak.</li>
+          <li>Support for LLVM 5.0.</li>
+          <li>Various compilation fixes for FreeBSD.</li>
+        </ul>
+      </description>
+    </release -->
+
     <release version="3.27.3" date="2017-12-11">
       <description>
         <p>