Mask sigil lines/dots using underlying shape #88
Description
It's nice to have a version of the sigil with a transparent background. But if the background layer alpha is turned up all the way, it is evident that rather than masking the lines and dots, they were just hidden by being the same color as the background.
This could be solved by laying over an svg ` element with the same shape as the underlying sigil shapes, so that the lines and dots would be masked outside the shapes and not simply camouflaged against the background.