MODERATORS NOTE:  This effect may have issues with newer versions of Paint.NET.  An alternative plugin, called Paste Alpha, is available here: https://forums.getpaint.net/topic/113220-boltbaits-plugin-pack-for-pdn-v41-and-beyond-updated-december-1-2018/       Alpha Mask -- 2.0    AlphaMask.zip     Version 2.0 adds the ability to use whatever image is on your clipboard. The supported image types at the moment is kinda sketchy, bu