[recipes] Update appdata for the next release

[Matthias Clasen <matthiasc src gnome org>]

commit a97647a664e5389962d7099c5c116749be007f65
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Dec 24 11:50:29 2016 -0500

    Update appdata for the next release

 data/appdata/org.gnome.Recipes.appdata.xml.in |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/data/appdata/org.gnome.Recipes.appdata.xml.in b/data/appdata/org.gnome.Recipes.appdata.xml.in
index ae90aed..ef8ef60 100644
--- a/data/appdata/org.gnome.Recipes.appdata.xml.in
+++ b/data/appdata/org.gnome.Recipes.appdata.xml.in
@@ -39,6 +39,24 @@
     </screenshot>
   </screenshots>
   <releases>
+    <release version="0.4.0" date="2016-12-26">
+      <description>
+        <p>
+          This release focuses on improving recipe editing, and also includes a new feature,
+          multiple ingredients lists per recipe. In detail:
+        </p>
+        <ul>
+          <li>Support multiple ingredients lists per recipe</li>
+          <li>Use 2 column layout for the edit page</li>
+          <li>Use the new image viewer for editing as well</li>
+          <li>Editing ingredients lists is much better</li>
+          <li>Only allow editing your own recipes</li>
+          <li>Move notes to the details page</li>
+          <li>Allow markup (links) in chef descriptions</li>
+        </ul>
+        <p>This release also adds and updates translations for several languages.</p>
+      </description>
+    </release>
     <release version="0.3.0" date="2016-12-15">
       <description>
         <p>