Abstract Play Renderer

[0.8.0] - 2021-12-27

Added

• Column labels are now infinite and fully customizable using the columnLabels renderer option. Just pass a string of characters.
• Added buttonBar to the areas property. This lets you create a vertical bank of buttons for use by the click handler. Button text can be arbitrarily styled. Example added to the playground.
• Added the key feature back, but it is now in the areas property and can only be arranged vertically and placed on the left or right. Other orientations may be added in the future. Example added to the playground.

Changed

• The static property has been added to the eject annotation if you don't want each consecutive notation to be wider and wider.