- bps.BPS only keeps track of rates of a single rate
- bps.BPS implements io.Writer
- removed chan semantics, interact via .Add or .Write
- fleshed out docs
After talks on #go-nuts, it seems as though I should look into using something
like the following:
https://github.com/cespare/goproc/tree/master/nwstat
And this makes sense. I have trimmed out the old tests and rearranged some code
here.