Update configuration.rst

Author: wachterjohannes

bundles/phpcr_odm/configuration.rst

@@ -180,12 +180,15 @@ Whether to automatically update nodes having ``mix:lastModified``.
 See `last modified listener cookbook entry`_.
 
 ``backend curl_options``
-""""""""""""""""""""""
+""""""""""""""""""""""""
 
 If you are using one of the Jackalope Jackrabbit backend, you can set
 the curl options which are described in the php-documentation
 `curl-setopt`_.
 
+.. versionadded:: 1.3
+    Since jackalope-jackrabbit 1.3, curl-options can be configured.
+
 PHPCR Session with Jackalope Jackrabbit
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~