+ Better DID validation and error reporting
+ add new functions in module utils.did: is_did, is_asset_did, asset_did_validate and did_validate
+ Read test contracts directly from barge
+ Tool to create a contract article json.gz file contracts on public networks
+ Tool to wait for development node to be built and contracts installed
+ Changed Account class to set the json key values on init, add new export, import, create features
+ Add request_ether_from_faucet method to DNetwork