This one's a bit earlier than I planned, but since it's done, I might as well announce it.
Behold: Inline attachments!
image.png
Well. Okay. That was already a thing in SMF. When you attach an image, click the up-arrow button to add it to the post as an inline image.
image.png
The new part is that you can now paste or drag images into the compose box to create an inline attachment! Just drag onto the box itself, and it'll upload the attachment and write out the BBCode for you. If you don't want to upload the attachment inline, you can still use the "Click or drag files" button (clicking or dragging both work) to attach it out-of-line.
Try it out, and let us know if anything goes awry! Hopefully it doesn't!
One caveat: this does not work on Quick Reply. This is because we're relying on the existing SMF attachment code, which isn't loaded for the Quick Reply form. If there's demand for it, I'll look into getting it added.