Changes for 3.0.7

• Added InputEvent.commandKey, which returns a normalized key string based on the InputEvent.key and InputEvent.code. This is convenient to use in CommandHandler.doKeyDown or Tool.doKeyDown and their overrides.
• Fixed keyboard shortcuts for QWERTZ-layout keyboards.

Be sure to see also: https://forum.nwoods.com/t/gojs-3-0-released/16808