changes.md

• 2019-09-27: Zui.isKeyDown is now Zui.isKeyPressed and another variable also called Zui.isKeyDown was added:
  • Zui.isKeyPressed is true if a key was pressed down on the last frame (only true for one frame)
  • Zui.isKeyDown is true if at least one key is held down (for an arbitrary amount of time until it is released)
• 2018-10-15: Zui.floatInput() is now Ext.floatInput()