Includes version increase for the new API and adds corresponding since
tags.

Change-Id: I075a5cab3ab0373a94e5e024668254a74a18cbcb
Signed-off-by: Ed Merks <ed.merks@gmail.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ui/+/181133
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Lars Vogel <Lars.Vogel@vogella.com>