bump version to 0.9.7.2

RELEASE_NOTES

 GNOME Keysign is a tool to make signing OpenPGP keys as easy as possible.
-This is the v0.9.7.1 release which fixes only the appdata.
+This is the v0.9.7.2 release which fixes only the appdata.
 
 You can get the app from:
             
@@ -8,11 +8,11 @@ You can get the app from:
 Changes
 ==========
 
- * Generate appdata with XML declaration
-
+ * Change desktop ID
+ * Save appdata in share/metainfo
 
 Resources
 =========
 
-Download: https://github.com/GNOME-Keysign/gnome-keysign/archive/0.9.7.1.tar.gz
+Download: https://github.com/GNOME-Keysign/gnome-keysign/archive/0.9.7.2.tar.gz
 Web site: https://wiki.gnome.org/Apps/GnomeKeysign

data/org.gnome.Keysign.raw.appdata.xml

@@ -43,6 +43,11 @@
  <project_group>GNOME</project_group>
 
   <releases>
+​    <release version="0.9.7.2" date="2018-05-17">
+​      <description>
+​        <p>Made Appdata go into right places</p>
+​      </description>
+​    </release>
 ​    <release version="0.9.5" date="2017-10-03">
 ​      <description>
 ​        <p>Add Bluetooth support</p>

keysign/_version.py

 #!/usr/bin/env python
-__version__ = '0.9.7.1'
+__version__ = '0.9.7.2'