v0.4.0

Thank you to our contributors for this release: @sheshenia and @4e554c4c.

New Features/Capabilities

• PostgreSQL storage backend! #51
  • See the Operations Guide section on the pgsql storage backend
  • See the schema.sql file to setup your database.
• Logging updates:
  • Source code filename and line logging now included and the log timestamp is part of the logfmt: 5db6e34
  • Plist parsing errors are now specially handled to log the problematic plist: #54

Bug fixes

• Guard potential nil enrollment metadata: 6772a99

Other

• Documentation fixes/improvements: ea9ff80, 560ced9
• Better handle DDM URL concatenation: 3368d22
• Trace ID callback signature now passes in the request: 92c977e, 773ad3b