release-0.17.0

This release updates our dependencies, and improves the peerd sub-command, as a result of great feature-requests from @terefang:

• #45 - Allow multiple instances of peerd running on the same host.
• #44 - Feature Request: Allow Peerd to execute commands on up/down.

NOTE: This release didn't get binaries built for it, due to a pipeline issue. release-0.17.1 was generated to resolve that.