shell: Makefile, prototype
fix: freeing ports; ports now properly deallocated after app crash or exit
add getEphemeralPort() in node API
capsule serialization fix
src ip fix in shell
add Node API: getInterfaceAddresses()
shell: move StopWait class; modifications to SessionManager: key as pair<ADR,PORT>
Preparation for Shell SessionManager
Add seqNum, adr a port to process datagram