Changed

• Rename the event component:clone in PasteComponent to component:paste and add component:clone
  to the clone method in Component

Added

• Added index method to the Component API
• Make work the visible property in Panels. Closes #1602 by @arthuralmeidap
• Add new hook methods to Component, updated and removed

Fixed

• Avoid the delete of inputs on canc key. Fixes #1606
• Take care of parenthesis when split CSS style values. Fixes #1579
• Adjust the sorter placeholder when the parent has flex direction as column. Fixes #1626
• Clear properly composite style properties. Fixes #1613
• Check if fullscreen is active before running exitFullscreen. Fixes #1667