Upgrade to PS 0.15.4

[CGenie]

This removes the deprecated Control.MonadZero monad.

I also used spago internally and found out unnecessary deps and some required one (control, foldable-traversable) so I added them to the bower.json file.

[hdgarrood]

Hey, thanks for the PR. It seems like the bower install step isn't working in CI, do you think you could resolve that?

[CGenie]

I guess you should try again, I'm not sure how to work with bower, spago is much easier for me, I just copy deps from a working spago env into bower.json.

[CGenie]

I don't understand the error about not being able to pull purescript-tuples.

https://github.com/purescript/purescript-tuples

The v7.0.0 tag is there.

[hdgarrood]

ECONFLICT means there's a conflict. One of the other dependencies must have a bound on tuples that precludes that version.

[CGenie]

OK now when I run bower update I get no resolution questions, I guess this means no conflicts.

[CGenie]

Now it throws some error about Test.Main missing.

[hdgarrood]

I think this might be a pulp bug - maybe try upgrading pulp?

[hdgarrood]

The pulp version is defined in package.json in case that wasn’t clear