Add tests and fix enumFromTo, closes #15

[sharkdp]

I'm not sure if the changes to .travis.yml and package.json are fine...

[sharkdp]

This PR actually depends on purescript/purescript#1963 as I'm using Eq and Ord deriving. This is why the build fails.

[garyb]

Looks great, and thanks for adding the tests. I'll leave this open until we figure out what we're doing with getting the deriving changes included.

[garyb]

Could you rebase this please?

[sharkdp]

Rebased, but cannot get this working (neither on Travis, nor locally)... I need psc 0.9.0 in order to parse the Foldable.js FFI code, but pulp 8.2.1 does not work with psc 0.9.0...

[paf31]

You have to either build Pulp 9 with psc 0.8.*, or use vanilla psc to build this, I think.

[garyb]

No problem, I'll cherry-pick this and fix up anything else that is required. Thanks!

[sharkdp]

You have to either build Pulp 9 with psc 0.8.*, or use vanilla psc to build this, I think.

Thanks for the hint. The tests pass locally if I build everything manually with psc 0.9.0. I cannot get Pulp master working (with both psc 0.9 and 0.8)... what is the right procedure to install Pulp manually? I tried following the steps in .travis.yml ...

[garyb]

I had difficulty getting pulp to build from master too, I can't remember what I did to make it work in the end. I think there were dependency issues, perhaps a missing commit hash or something. @hdgarrood?

[hdgarrood]

Yeah, that sounds plausible. I think pulp should be updated to point at psvm master now, the PR it needed has been merged now IIRC. I can't get to a computer to address this until this weekend unfortunately.

[garyb]

No need for me to do anything, checked out locally this builds and tests successfully. Thank you!