Nettle.jl <https://github.com/staticfloat/Nettle.jl> has just broken its API significantly, in order to be much more precompile-friendly. The big takeaway is that methods such as `md5_hash(data)` should be mapped to `digest("md5", data)`, there are no more auto-generated types for hashes, and internally the code is a little easier to grok. This new version of `Nettle.jl` has not been released yet, I will make every effort to ensure that dependent packages have a chance to adapt before releasing the new version. -E
