nettle-0.3.1.1: safe nettle binding

# nettle-0.3.1.1: safe nettle binding

safe binding for the nettle (http://www.lysator.liu.se/~nisse/nettle/nettle.html) library. Tested with 3.4, might work with 3.2 (but not earlier).

Modules

nettle-0.3.1.1

- Crypto
  Submodules
  - Nettle
    Submodules
    - Crypto.Nettle.CCM
    - Crypto.Nettle.ChaChaPoly1305
    - Crypto.Nettle.Ciphers
    - Crypto.Nettle.HMAC
    - Crypto.Nettle.Hash
    - Crypto.Nettle.KeyedHash
    - Crypto.Nettle.UMAC