Update to latest hlint, hindent, and stylish-haskell about hfmt

[danstiner]

Releasing a new version now that supports building with stackage versions >= 8, thanks to you both for bumping me about this so I'd have a reason to come back and fix it.

[danstiner]

Thanks for the comment, definitely would be nice to work with newer stackage versions but there were some breaking changes in stylish 0.6 that need to be accommodated before this can work.
I'm currently traveling but I'll take a look when I get the chance.

[alx741]

Same here, doing stack install hfmt complains:

While constructing the build plan, the following exceptions were encountered:

In the dependencies for hfmt-0.0.2.3:
    stylish-haskell-0.6.1.0 must match ==0.5.* (latest applicable is 0.5.17.0)

Plan construction failed.

Having hfmt to work with stylish-haskell-0.6.* would be nice

[zkourouma]

looks like stack install hfmt is failing due to hindent and stylish-haskell versions.
hindent-5.2.3 must match >=4.5 && <5 (latest applicable is 4.6.4)
stylish-haskell-0.7.1.0 must match ==0.5.* (latest applicable is 0.5.17.0)