Implement Layer -> Add -> Blank layer
If no image is loaded, reroute Ctrl+V to "Paste as New Image"
Greatly improve Paste functionality with web browsers

Long story short: 32bpp image handling is a disaster on the Windows
clipboard.  PD handles it well by utilizing PNG clipboard data
(supported by MS Office, GIMP, Paint.NET among others), but not all web
browsers will copy data in PNG format.

Chrome and Firefox (possibly others - haven't tested) will, however,
copy a URL of any copied image to the clipboard.  This is ideal, as we
can grab the image file and then do our own processing to it (properly
handling color management, etc).

Anyway, PD will now check for HTML fragments that contain an image URL,
and if found, it will download the image itself.
Edit -> Paste as New Layer now works with online images

Very exciting, as PD now provides best-in-class clipboard compatibility
with images copied from web browsers.

Still todo: drag/drop from web browsers...