* crypto/keyring: fix signing algorithm * client: tests * minor fixes * changelog * address @alexanderbez comments * Update crypto/keyring/keyring.go * Update crypto/keyring/signing_algorithms.go * Update crypto/keyring/keyring.go * Update crypto/keyring/signing_algorithms.go Co-authored-by: Alessio Treglia <alessio@tendermint.com> * fix test Co-authored-by: Alessio Treglia <alessio@tendermint.com>