v1.4.0

This is a relatively small release, adding support for mapping OTel environment variables to Envoy's OTel config, and unix domain sockets. There have also been several performance enhancements that reduce some per-request overhead.

📈 Enhancements

• Add OTel support by @chokoswitch in #330
• Don't setup HTTP client context when there are no upstreams by @chokoswitch in #331
• Add option to set envoy workers by @chokoswitch in #336
• Optimize asyncio task creation and scheduling and WSGI threadpool by @chokoswitch in #339
• Add support for unix domain sockets by @chokoswitch in #342

Full Changelog: v1.3.0...v1.4.0