Go port of Panic's iTunes 11 album art color algorithm.

Looks like iTunes 12 uses a blurred version of the album cover now. Here's a quick repro:

gm mogrify -size 320x320 -format blur.jpg -blur 240x240 album.jpg

To view a demo:

$ go run main.go covers.html ~/album/*.jpg > index.html

To speed things up, this code makes use of GIFT to resize images. Also, the file "pixel.go" from that project was copied directly into the project to make getting pixels faster.

go get -u github.com/disintegration/gift