prepare 1.8.11 (#346)

Author: stonebuzz

mreporting.xml

@@ -98,6 +98,11 @@ Voir documentation : https://github.com/PluginsGLPI/mreporting/wiki
       <author>Infotel</author>
    </authors>
    <versions>
+      <version>
+         <num>1.8.11</num>
+         <compatibility>~10.0.11</compatibility>
+         <download_url>https://github.com/pluginsGLPI/mreporting/releases/download/1.8.11/glpi-mreporting-1.8.11.tar.bz2</download_url>
+      </version>
       <version>
          <num>1.9.4</num>
          <compatibility>~11.0.0</compatibility>