Merge child repository "disco" into cleanco

[rjurney]

I have open sourced Deep Discovery's in-house improvement of cleanco called disco: https://github.com/rjurney/disco mostly created by @marekmodry

It handles non-latin languages much better than cleanco did a couple of years ago. It is also much faster than cleanco was at that time. I am interested in getting this code into cleanco, if possible so people can use it.

[petri]

Any thoughts on what approach(es) could or perhaps should be taken?