ratchet 1.2.0

Defines the [Ratchet] struct. A [Ratchet] is a cryptographically secure pseudo random number generator. use `--features serde` to provide serde implementations. # Examples ```rust use ratchet::typenum::consts; use sha1::Sha1; use rand_core::RngCore; let mut ratchet = ratchet::Ratchet::::default(); let mut bytes = [0; 1024]; ratchet.fill_bytes(&mut bytes,); ``` Author -- DMorgan Last Moddified --- 2020-03-11