We've decided to remove the option to allow all deprecated features,
because this has the effect that, if a user enables this flag, they
won't get the warning (and hence may forget to take action) at the time
that a feature is moved from the default-allowed set to the
default-denied set.
Co-authored-by: str4d <thestr4d@gmail.com>
Previously we only required synchronization points where blocks were
sent between nodes; now we need them between action and query operations
on the same node, because wallet notification of mined blocks no longer
occurs in real-time.