da8b85ed7c Implement Debug for Hkdf (Tobin C. Harding)
85652359e8 hashes: Derive Copy and Clone for Hkdf (Tobin C. Harding)
Pull request description:
Currently the `Hkdf` type does not derive any traits.
Derive `Copy` and `Clone` and implement `Debug` based on secret obfuscation algo in `rust-secp` (in the `secret` module).
ACKs for top commit:
apoelstra:
ACK da8b85ed7cf34c0510c0b64c67477d3819bee369; successfully ran local tests
Kixunil:
ACK da8b85ed7c
Tree-SHA512: 8ae0e8857ea0e32ad5ef8f544979eeb9d530beb1b6f046ce28a286ca2231f8f696a9f4f8d9ea219d3389c4216d6b69766dbd96edbb27e7489803ac583bf3b200