7c5b7d23e7
* workaround the "commitment is not a public key" problem by using to_two_keys() from rust-secp256k1-zkp * remove secp256k1zkp, update the various Cargo.toml to use rust-secp256k1-zkp from external git repo, update code to not rely on to_pubkey (and use verify_from_commit) * secp256k1zkp from git * cleanup secp256k1 dependencies * gitignore node1 and node2 dirs