chore: add version to appdata.xml adapt update-versions script

res/io.github.qtox.qTox.appdata.xml

@@ -21,7 +21,7 @@
     Nowadays, every government seems to be interested in what we're saying online.
     qTox is built on a "privacy goes first" agenda, and we make no compromises.
     Your safety is our top priority, and there isn't anything in the world that
-    will change that. 
+    will change that.
   </p>
   <p>Instant messaging, video conferencing, and more.</p>
   <ul>
@@ -63,5 +63,8 @@
  <url type="homepage">https://qtox.github.io</url>
  <update_contact>barrdetwix@gmail.com</update_contact>
  <project_group>qTox</project_group>
+ <releases>
+​  <release version="1.16.3" date="2018-07-21"/>
+ </releases>
 </component>
 

tools/update-versions.sh

@@ -17,7 +17,7 @@
 
 
 # script to change versions in the files for osx and windows "packages"
-# 
+#
 # it should be run before releasing a new version
 #
 # NOTE: it checkouts the files before appending a version to them!
@@ -55,6 +55,14 @@ update_readme() {
     sed -ri "s|(github.com/qTox/qTox/releases/download/v$VERSION_PATTERN/qTox-v)$VERSION_PATTERN|\1$@|g" README.md
 }
 
+update_appdata() {
+    cd "$BASE_DIR"/res/
+    local isodate="$(date --iso-8601)"
+    sed -ri "s|(<release version=\")$VERSION_PATTERN|\1$@|g" io.github.qtox.qTox.appdata.xml
+    sed -ri "s|(<release version=\"$VERSION_PATTERN\" date=\").{10}|\1"$isodate"|g" io.github.qtox.qTox.appdata.xml
+}
+
+
 # exit if supplied arg is not a version
 is_version() {
     if [[ ! $@ =~ $VERSION_PATTERN ]]
@@ -74,6 +82,7 @@ main() {
         update_osx "$@"
         update_windows "$@"
         update_readme "$@"
+        update_appdata "$@"
     else
         # TODO: actually check whether there is a GNU sed on osx
         echo "OSX's sed not supported. Get a proper one."