Go-bitmap implements a trivial set of function to operate on bitmaps (byte slices) of arbitrary sizes.
GoDoc style online: http://godoc.org/github.com/thorduri/go-bitmap/bitmap
Otherwise after the package is installed, by issuing:
$ go doc github.com/thorduri/go-bitmap/bitmap
$ go get github.com/thorduri/go-bitmap/bitmap
Go-bitmap is licensed under a ISC (BSD) style license.