released version 2.1.0

* added oembed_url filter: https://github.com/pfefferle/wordpress-oembed-provider/pull/2
* better `custom_post_type` support

git-svn-id: https://plugins.svn.wordpress.org/oembed-provider/trunk@1045828 b8457f37-d9ea-0310-8a92-e5e31aec5664