2.20.5 Fix locking issue.

Core

• feat(nats-connection): implement named executor thread factories #1254 @kedzie
• Edit lock don't unlock if was not locked. #1255 @scottf
• Executor and Executor Factories in Options can be created via properties #1257 @scottf

JetStream

• Fix simplified ordered consuming when a delivery policy was set. #1251 @scottf @roeschter
• Fix: exception on simple consume when disconnected immediately #1253 @roeschter

Documentation

• NoWait documentation #1256 @roeschter

Tests

• Unit test coverage #1252 @scottf