log+ignore unrecognized phase messages
log+ignore unrecognized phase messages

This should enable forwards-compatibility with clients which send extra
data, like a pre-PAKE "auxdata" message that hints we should spin up a
tor client (because they can connect to it) while we're waiting for the
user to type in the wormhole code.

warner/magic-wormhole,warner/magic-wormhole,warner/magic-wormhole,warner/magic-wormhole