WebKitGTK+ 2.15.2 released!

This is a development release leading toward 2.16 series.

Add new API to notify about dynamically added forms to Web Extensions.
Implement selection interface and states for elements supporting aria-selected and for menu roles.
Expose STATE_SINGLE_LINE and STATE_MULTI_LINE for ARIA searchbox role.
Enable WebMemorySampler.
Downloads started by context menu actions now have a web view associated.
Fix a network process crash when main resource load is converted into a download.
Fix several crashes and rendering issues.

Thanks to all the contributors who made possible this release.