v1.3.0

This release was mostly about V. PayID, and adding support for the "self-sovereign" identity keys, which we anticipate being most useful in a non-custodial setting. Here is the RFC describing self-sovereign Verifiable PayID.

Features

• Add V. PayID support
  • Add identityKey as a nullable property on PayID accounts
  • Add identityKeySignature as a nullable property on a PayID address
  • Admin API GET/POST/PUT/DELETE for V. PayID accounts and addresses
  • Add V. PayID keys to the response object for Public API (PayID Protocol) requests
• Push metrics now report the "serverAgent" (so the fact that this is the Xpring Reference Implementation server), and the "protocolVersion" (so which version of PayID the server currently supports).
• Add a version property to PayID Protocol (Public API) responses, as this is potentially how we will version PayID in the future, instead of using a PayID-Version header.

Fixes

• Distinguish between a 404 because the PayID did not exist, and a 404 because the PayID account existed, but had no associated addresses (if you can't pay a PayID, does it actually exist?)

Project Internals

• Bump various dependencies
• Refactor metrics such that we now use the payid-org/server-metrics library.