Implements InstantiateContractEvent and StoreContractEvent handlers & their respective entities
Introduces Contract entity and saveContractEvent
implements rudimentary modified Jaccard similarity algorithm
to match contract payload structure to preset ideal structures. This will need some tweaking to get the weighting/filtering correct.
CW20 interface compliance - Addressing #83
InstantiateContractEventandStoreContractEventhandlers & their respective entitiesContractentity andsaveContractEvent