Changelog:
============
*eventlet.websocket is not always used from eventlet.wsgi, so do not assume
eventlet.set_idle exists
*Make sure asyncio hub doesn't use greendns for asyncio DNS APIs
*Make asyncio.to_thread work with the same semantics as normal asyncio
*Refactor congruence checks based on assert at runtime
*Run tests on macOS in CI, and some fixes to get it in reasonable state
*Fix wsgi.server shutdown for in-flight requests
*Add debug convenience helpers - asyncio, threads
*Handle errors better.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>