v0.9.0-1: (Still) Rat Poison Squared on Steroids

This is a point release addressing some minor issues that slipped through with
the v0.9.0 release, mainly due to the rewrite of the pay plugin for
multi-part payment support.

For details on the changes included in this point release please refer to the
tracking issue #3928. We suggest upgrading to this version if:

• You are using a wallet that shows incorrect information due to missing
  fields in the RPC responses.
• Larger payments above 10,000 satoshis to non-public nodes fail due to the
  destination being unreachable.

We apologize for the inconvenience, and thank the community for the extensive
testing and feedback so far.

-- Christian