Prepare the 1.9.1 release

package.xml

@@ -16,9 +16,9 @@
   <email>chuck@horde.org</email>
   <active>yes</active>
  </lead>
- <date>2019-11-30</date>
+ <date>2020-06-06</date>
  <version>
-  <release>1.9.0</release>
+  <release>1.9.1</release>
   <api>1.3.0</api>
  </version>
  <stability>
@@ -27,7 +27,7 @@
  </stability>
  <license uri="https://opensource.org/licenses/bsd-license.php">BSD-2-Clause</license>
  <notes>
-* Added support for the XOAUTH2 authentication method
+* Added .gitattributes for nicer packaging
  </notes>
  <contents>
   <dir baseinstalldir="/" name="/">