Use @reach/slider to have styled enhanced sliders.

Implement content type previews of text, binary, audio, video, and
image types.

Implement previews for audio and text.

Improve UI of FileSelectBox.

Make the kitchen sink more adaptable to new categories.

The blob category, which is for accepting binary input, has been
designated.

Combo box is just ordinary input with options.

Add files from restructured repository.