v0.4.0 Release

🚀 (Enhancement)

• opentelemetry-api
  • #727 Api separation (deprecate opentelemetry-types)
  • #749 chore: rename registry to provider

✨ (Feature)

• opentelemetry-plugin-http
  • #719 feat(plugin-http): sync. specs for statuscode
• opentelemetry-exporter-jaeger
  • #735 feat: decode jaeger header
• opentelemetry-plugin-user-interaction
  • #658 feat: plugin user interaction for web

📚 (Refine Doc)

• #689 Add benchmark README and latest numbers
• #733 chore: add instruction for pg-pool plugin
• #665 docs: add ioredis example
• #731 Update Stackdriver exporter example

🐛 (Bug Fix)

• opentelemetry-exporter-jaeger
  • #715 fix: unref jaeger socket to prevent process running indefinitely
• opentelemetry-plugin-ioredis
  • #671 [ioredis plugin] fix: change supportedVersions to >1 <5