Add function prop for labelling keys. Also changed some props for clearer usage.

Orientation is limited to 90-degree intervals.

Support MIDI event handling by suppling a `MIDIInput` object through the `midiInput` prop.

Make component single channel only, in order to have a more concise API.

Add demo for GitHub Pages

Also disable keyboard event handling when one of Shift, Ctrl, Alt, or Cmd is pressed.

Keyboard map is the one responsible for handling mouse, touch, and keyboard events. This is to keep the keyboard rendering and external events handling separate.

Demonstrate scaling of detail in styled key set.

Export styled keys for customization of the component.

Use custom styled keys and add pressed keys for styled key set.