Feature request: Choose backup unicode font

[TacoDelPaco]

Apparently BetterFonts will load another font if the chosen one does not have all the unicode characters available, which is very neat and handy but it would be nice to be able to choose this font rather than have it be random (or alphabetical?). Arial Unicode MS does not blend well with Cantarell, as an example.

[BetterFonts]Starting BetterFonts... BetterFonts loading font "Arial Unicode MS"