Releasing 3.1.3

CHANGELOG.md

@@ -1,12 +1,15 @@
 ChangeLog
 =========
 
-3.1.3 (????-??-??)
+3.1.3 (2016-04-06)
 ------------------
 
 * Set minimum libxml version to 2.7.0 in `composer.json`.
 * #805: It wasn't possible to create calendars that hold events, journals and
   todos using MySQL, because the `components` column was 1 byte too small.
+* The zip release ships with [sabre/vobject 4.1.0][vobj],
+  [sabre/http 4.2.1][http], [sabre/event 3.0.0][evnt],
+  [sabre/uri 1.1.0][uri] and [sabre/xml 1.4.1][xml].
 
 
 3.1.2 (2016-03-12)