v0.4.0

What's Changed

• ci: add lint and test workflow by @johnnylarner in #26
• tests: add test coverage for RPC and error layers by @johnnylarner in #30
• fix(rpc): use ordered collection to ensure deterministic packets by @johnnylarner in #32
• feat: add retry support by @johnnylarner in #31
• feat: add tracing exports by @johnnylarner in #28
• feat: add healthz endpoint by @johnnylarner in #29

Full Changelog: v0.3.0...v0.4.0