add: trade-processor-project initial implementation
add: another one layer of abstraction - "message_received_events" interface-class
     implementation of building "chain of responsibility" - background for future
     tests

del: not necessary buffering of received data
mod: some changes in names of classes and objects
add: data files for tests
     tests for quote_messages_processor, trade_messages_processor classes and market_messages_pump class
mod: remove unnecessary data-buffering in class market_messages_pump
     separate parsing of transmission block in standalone function, because it might be useful for tests also
mod: hide details of messages parsing behind interfaces of classes quote_messages_processor/trade_messages_processor.
completions
Merge pull request #204 from PeterMoroz/trade-processor-project

Trade processor project from Peter Moroz
Merge pull request #209 from aLekSer/master

adding tasks form 1-6 weeks