Works great, but it appears in a hidden HTML spot. I have to open up the inspector, search for "downloader", and drag the button so it's below "info-text", then it works as intended. It'd be great if it was fixed to appear in the right spot again.

Update: v.0.2.4 fixed my issue! Thank you! It now works and appears properly. It will require a tool to mux after download for quality above 720p. I recommend MKVToolNix.