parity-secp256k1 0.7.0

Fork of Rust bindings for Pieter Wuille's `libsecp256k1` library. Implements ECDSA for the SECG elliptic curve group secp256k1 and related utilities.

Documentation

* Unit tests for fieldelem/groupelem, including ones intended to
  trigger fieldelem's boundary cases.
* Complete constant-time operations for signing/keygen