Pixel/Unit settings

Hi,

PyxelEdit makes 72px/unit images, and so I sometimes need to pass it to 48px/unit for my games ...
I'm forced to create in PyxelEdit then go in ¨Photoshop to change the pixel/unit of my image.

Maybe good to implement this function in creation window of a new file or/and in canvas size setting.

If I'm wrong and this feature already exist, please tell me how to do this ! ;)