licence: remove various GPLv3 copyright headers;

event_new: remove unused package that had been copied for discussion

monax: lingering eris -> monax company rename

licence: last pass, further cleanup

rpc: add AssertIsRPCResponse as marker method for restricting implementation of interface to actual RPCResponse types

client: DumpStorage; rpc/tendermint: util to unwrap to core types, preventing exposure of internal types to client

Refactored tests to make more manageable, made pass against updated types, fixed issues that were uncovered

CheckTx is run