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.
[submodule "depend/secp256k1"]
	path = depend/secp256k1
	url = https://github.com/bitcoin/secp256k1