InfraBlockchain 2.3.0 Release Candidate 1

Feature

• InfraBlockchain Standard Token Interface compatible with 'eosio.token' contract
• get_abi chain API : return sys.tokenabi standard token abi if an account doesn't have abi set explicitly
• InfraBlockchain core porting from EOSIO v2.0.13 code base for stability, history tools compatibility and preparing Mandel repository code-merge. (https://github.com/eosnetworkfoundation/mandel)