Simon's Carefully Chosen Release Name II

This is a minor release, highly recommended, which fixes two problems with the v0.11.0.1 release:

1. Unwanted unilateral closes. We could get confused by reconnections, and think that a peer had sent us out-of-date "channel_reestablish" data. This caused us to complain about e.g. "bad reestablish revocation_number: 7457 vs 7462" and send an error and close the channel.
2. An overzealous check in connectd, particularly when reconnecting with multiple channels, which intermittently crashed the node.

Thanks to all the people who reported bugs!
Rusty.