Primitive bounds are too tight.

[nerfingen]

Hi,

this tool compiles and none of the test fail with primitive 0.8.0.0, which is currently ruled out by the version constraints.
It also brakes this package in the current nix haskell package set, as this comes with primitive 0.8.0.0
I just bumped the version, see pull request below (that I will create in the next 2 minutes).

nerf

[nerfingen]

[#128] would fix that too. I would vote to merge that instead