Add stack.yaml to build with stack

[Tehnix]

No description provided.

[yav]

Hey, thanks for generating this, but could you prune it down a bit, so that it doesn't have all the auto generated gunk?

Also, I am not a stack expert, but why does it says that you need lts-9.9. I believe this package should also work with much older ones...

[Tehnix]

Ah, yeah, I've removed the autogenerated comments :) As for the LTS, it needs to be set to a specific one. It is merely for cloning down the repository and building the executable locally though, so it's not any concern as long as colorize-haskell is expected to work with the specific GHC versions that the LTS uses (in this case 8.0.2).

Also, I hope you didn't take offense by my asking if the repo was dead or anything, it was perhaps a bit too bluntly phrased, I just wanted to do an official poke to see if I could justify taking over as a stackage maintainer for this package, which I wouldn't mind :)

I can open a separate issue for this, but would you mind that I took responsibility for getting the package into stackage? The process is described here and doesn't entail any work on your part, just that I wanted you to be aware of it.

It would mean that for example ghc-core would be able to build directly from stackage/stack without having to add colorize-haskell as an extra-deps :)

[yav]

Thanks!