Renamed project sparkanta-api to sparkanta-common.
Big reogranization in progess (project is compiling, many classes are commented out):
- TcpConnectionHandler is responsible for reading identification string and software version, then starting incoming data listener and outgoing data listener,
- previous implementation of IncomingMessageListener and OutgoingMessageListener are commented.
Created OutgoingDataListener.
Renamed internal state of TcpConnectionHandler from Unidentified to SoftwareVersionUnidentified.
Renamings in TcpConnectionHandler and TcpConnectionHandlerConfig.
Initial work of adding IncomingDataListener.
Added IncomingDataListenerConfig for IncomingDataListener, now timeout for identifying spark device id is supported.
Not tested IncomingDataListener should be ready now.

Removed softwareVersion from Hello.

From many messages (like NewIncomingConnection) removed tcpActor, tcpConnectionHandler, incomingDataListenerActor and outgoingDataListenerActor.
Successfully received indetification string, software version and Hello message.
Removed unused (commented out) files.
MessageHeader was renamed to MessageLengthHeaderReader.
MessageHeader65536 was renamed to MessageOfLength65536HeaderReader.
Now MessageOfLength65536HeaderReader and Deserializers are passed to IncomingDataListener thru constructor (passed from TcpConnectionHandler).