An issue that prevented this add-on's embeds to show up in XFMG 2.3's Fancybox has been fixed.
Bandcamp, Giphy, Medium, and Spreaker have been updated.
This update fixes an issue with XenForo 2.3 that causes embeds to be loaded eagerly (rather than lazily) if the user is an administrator and template names debugging is enabled.
Also, somehow Palpatine returned Bleacher Report was still present in last update. It's now been properly removed.
BleacherReport's embedded player has apparently disappeared and currently returns a 404 error. To my knowledge, there is no workaround. If you use a custom [URL] BBCode to display media content, the broken videos will revert to a link. Otherwise, they will simply disappear.
Imgur has been updated to avoid incorrectly converting https://imgur.com/upload to a non-functional embed.
How to configure: go to your admin panel, go either to this add-on's options or to the XenForo entry in the BB code media sites menu, then add the hostname of the XenForo 2.3+ forum you want to embed from. Make sure that the target website runs XenForo 2.3, which at this time is a very short list.