Experimental refactoring of DeviceBase to move actual networking code into a separate class
partially working DeviceServer with TCP server component ripped out
More or less working DeviceServer with stuff ripped out
Generalize ClientConnectionTCP -> ClientConnection, import separate of concerns
between ClientConnection and TCPServer
Add restart queue to test driver
Some renames and cleanups
Refactor device server network- and KATCP-specific parts into separate classes,
also removing twisted implementation
Merge branch 'master' into tornado-play
Ensure client sockets are always closed when the server main loop exits
Merge pull request #4 from ska-sa/refactor-server-network-io

Refactor server network io