As part of project migration from trinket to the code editor some additional functionality is required. This PR enables iframes to be used from the same approved external sources list as used for href's and other src attributes. By expanding this to allow for self references (i.e. src with a value the same as the PUBLIC_URL) users can embed other projects they (or we) own in iframes into their projects
As part of project migration from trinket to the code editor some additional functionality is required. This PR enables iframes to be used from the same approved external sources list as used for href's and other src attributes. By expanding this to allow for self references (i.e. src with a value the same as the
PUBLIC_URL
) users can embed other projects they (or we) own in iframes into their projects