4.0.0

[markusenglund]

Changed

• The switch now includes a hidden nested checkbox input, which creates an experience more akin to a normal checkbox - clicking on the label will now cause a toggle, and the VoiceOver screen reader will now reliably read the label.
• The switch will now always fire the onChange event if the dragStop event occurs <250ms after the dragStart event since that feels like a click.
• Aria role changed from "checkbox" to "switch".
• Pressing enter no longer activates the switch (spacebar still does)

Added

• Add new tabIndex prop

Fixed

• Fix glitch where the clicking the handle wouldn't trigger onChange event when browser window was out of focus on Windows.