rfc: use exception's Control.Monad.Catch.MonadThrow instead of ExceptT

[ibotty]

Most or at least many haskell packages went the way of using MonadThrow instead of typed Exceptions for IO code.

See Michael Snoyberg's essay for a rationale.

[tylerholien]

Yes! This is definitely on my list of todos.

[ibotty]

Before I start doing that, what's your stance on pull #21 (mtl-style API)? I would like to base the work on that pull request.

[tylerholien]

I'd hold off on doing this until I can get my branch I'm actively developing on pushed up. Then you can work off of that branch since there are so many changes there. I'll try my best to get it pushed up soon!

[ibotty]

No hurry! Can you update either bug when it lands?

[tylerholien]

Yes, no problem.

[tylerholien]

I haven't had a chance to work on this lately, so I pushed what I have to a branch https://github.com/tylerholien/milena/tree/new-style-groups.

It's in pretty embarrassing shape, but you can work off of that!