Configure Prioritized Image Formats

Depending on the application I'm using, the clipboard can contain different image formats. For example: ``` > osascript -e 'clipboard info' «class furl», 138, TIFF picture, 73174722, «class 8BPS», 73170112, GIF picture, 5384017, «class jp2 », 2444234, JPEG picture, 1775246, «class PNGf», 37005596, «class BMP », 36578358, «class TPIC», 30981138 ``` What I'd really like to be able to do in cases like this is to prioritize the order of the type of image that is pasted. Specifically in my case, I always want PNG, I do not want TIFF.