Added JSFiddle.
Added experimental support for dark themes. Currently supported: Bandcamp, JSFiddle, Spreaker, Twitter.
Removed FOX Sports. Their video section has been discontinued and all of their URLs return a 404 error now.
As far as I know, Facebook embeds don't currently have a dark mode.
Added Falstad. Thanks to ControlBooth.com for sponsoring this addition.
Fixed an issue with full-width embeds such as GitHub Gist and Google Sheets being limited to 640px. They are now back to 100% width.