* vendor: add github.com/btcsuite/btcd/btcec * crypto: add btcec fallback for sign/recover without cgo This commit adds a non-cgo fallback implementation of secp256k1 operations. * crypto, core/vm: remove wrappers for sha256, ripemd160
whisper: project restructured, version 5 introduced This commits adds a draft version of the new shh v5 protocol. The new version is not on by default, --shh still selects version 2.