Another IndieWeb milestone! Ryan Barrett has released
From micropub.net: “Micropub is an open API standard that is used to create posts on one’s own domain using third-party clients.”
That means you can post things on your blog using any Micropub-supporting editor, decoupling the tools for writing a post from the particular system used to publish it.
I have just installed it, and then used the (experimental, I think) Quill editor to compose this post, so I can confirm it works. (I’ve since edited the post directly in WordPress.)