/client/commands - now externalizes attached Requester
/client/requester - logger integration, formatting, error formats modifications, hostURL extracted credentials getter, hostURL path and file extraction minor fix, data channel close fix
/client/ - refactor from scratch to reuse Commands and Requester instances. (work in progress)
/core/addr - ip version agnostic support added
/core/addr_test - constants renaming clash resolved
/core/logger - added a simple logger
/core/logger_test - added logger test