* Optimizations + some improvements - optimized pkg/core/storage.HeaderHashes - optimized pkg/rpc.performRequest (used json.Encoder) - fixes for pkg/util.ReadVarUint and pkg/util.WriteVarUint - optimized and fix fixed8 (Fixed8DecodeString / MarshalJSON) + tests - optimized and fix uint160 (Bytes / Uint160DecodeString / Equal / MarshalJSON) + tests - optimized and fix uint256 (Bytes / Equal / MarshalJSON) + tests - preallocate for pkg/vm.buildStackOutput - add go.mod / go.sum * update version
* Started RPC package to allow querying balances and sending raw transactions for sc's * integrate invoke cmd in cli * bumped version * added sendrawtransaction to the rpc client.
