Fix fills appearing from only 4 of 8 corners. Prevent fills coming from same corner twice
Merge pull request #20 from ultrafez/cubefill-rewrite-fixes

Cubefill tweaks
temp
not really working at all
looking better
changes
added fade to red as the volume gets louder
dunno
make audioblob more VU-like
Added frequency spectrum. Unfinished
Nice VU colours
Fade historical spectrums out
Commented-out code allowing slowing down of history
Tidying up