Support base16-bytestring-1.0.0.0

[akshaymankar]

Fixes #4

[mtth]

Thanks for the PR @akshaymankar. I've just fixed the issue in 47a15f0; it seemed preferable to avoid using packages that aren't in Stackage's LTS.

[alaendle]

@mtth - since base16-bytestring >= 1.0.0.0 is now available (and required) by stackage nightly maybe this change can be applied (and the package reenabled on stackage)?

[mtth]

@alaendle - SGTM, I'll try to update it this weekend.

FTR: commercialhaskell/stackage#5649

[alaendle]

@mtth But also enjoy the Easter holidays! 🐇

[mtth]

0.0.6.2 now available on Hackage uses the updated base16-bytestring.

[alaendle]

Time to re-enable it on stackage master and maybe also lts18 (https://github.com/commercialhaskell/stackage/blob/a4e9060dfd73253517af54ee3eb14ac7421ca0cc/build-constraints.yaml#L156)? I would have created a corresponding PR myself, but as far as I understand this something that should be reserved for package maintainers.