Embed Notice

@eaton @deadparrot @zachleat @dries hah bingo - the first features we built in the CMS we have are:

* Knowledge Graph taxonomy selector
* AutoID components for providing a hierarchical identifier (e.g tag/type/slug)
* Rewrote their asset selector for fields to inline the asset editor instead of have it be another popout or page

I expect it'll be more like this, fixing the missing things we need