Added test vectors for send.compose, dividend.validate and issuance.validate.
Added test vectors for send.compose, dividend.validate and issuance.validate.

monaparty/counterparty-lib,CounterpartyXCP/counterparty-lib,monaparty/counterparty-lib,coinwarp/dogeparty-lib,F483/counterparty-lib,jarymoth/counterpartyd,F483/counterparty-lib,gotcha/testcounter,tokenly/counterparty-lib,CounterpartyXCP/counterparty-lib,stefcrypto/counterparty-lib