v0.5.6

NetAudio 0.5.6 shows route changes on DDM-managed devices as soon as DDM reports them.

Fixes:

• A route change on a managed device now appears without a manual refresh. Once DDM accepts the change, the daemon reads the device back every half second, for up to 10 seconds, until DDM reports the new route. Before, the old route stayed in place until the next refresh (#69, #72).
• The routing matrix marks a managed route change as pending as soon as DDM accepts it, then shows the confirmed route once DDM reports it (#72).
• Consecutive route changes on managed devices no longer wait for the previous change's readback to finish.
• Connecting a managed device's receive channel to one of its own transmit channels works. The daemon now sends DDM the device's own name as the transmitter instead of "." (#73).

Thanks to AchilleD for #72 and #73.