[dev213]

Looks really nice, and works well too! I just have two little UX gripes:

- Allow submission of a message with some sort of keyboard shortcut (enter and shift + enter only add a new line)

- Disable the "Send" button while the completion is loading, this prevents accidentally clicking send twice, causing the process to fail.

edit: formatting and typo

[langcss]

Thanks for the spot! I'll fix these up maybe after the HN traffic has died down :-).