v0.12.0

What's Changed

• Parse otel headers automatically + create otel example by @jackkleeman in #39
• Use 1.6 test suite by @slinkydeveloper in #41
• Implement workflows and durable promises by @jackkleeman in #40
• Update test suite by @jackkleeman in #44

Full Changelog: v0.11.0...v0.12.0