@roelvangils @coreORB wanna give it a try before I release it? leave any feedback here

Download it here: SwiftShift.zip

There's a new option in the menubar that enables that behavior

It's working great! It's much better solution, than mine.
Only thing I've noticed - on resizing to the right window will stop at the edge of screen, but when resizing to the left window can be resized beyond the screen edge. IMO it's low priority feature request.
Thank You for this, it's sooo convenient :)

@coreORB ha, that's right. I have no idea why, since I'm not limiting neither of those.

Ok seems good enough to release it. I've been trying it without quadrants and it doesn't seem to disturb the regular resizing, so I'll merge it and release it