- Update to 4.1.5:
* Fixed mutable object used as kwarg for Server ctor
* Corrections to teleport example
* Lowered GIL-lock acquires for <64kb within channel sends to address slowness

- version update to 4.1.4
- Merged 3.7 and 3.8 teleportatio compat enhancement `#371`_
- Fixed connection hanging due to namepack cursor `#369`_
- Fixed test dependencies and is_py_* for 3.9
- Performance improvements: `#366`_ and `#351`_
- Merged fix for propagate_KeyboardInterrupt_locally `#364`_
- Fixed handling of exceptions for request callbacks `#365`_
- Partially fixed return value for netref.__class__ `#355`_
- Fixed bsc#1152987 `CVE-2019-16328`_ which was caused by a missing protocol security check
- Fixed RPyC over RPyC for mutable parameters and extended unit testing for `#346`_

- Update to 4.1.1:
* Fixed netref.class_factory id_pack usage per #339 and added test cases
* Name pack casted in _unbox to fix IronPython bug. Fixed #337
* Increased chunk size to improve multi-client response time and throughput of large data #329
* Added warning to _remote_tb when the major version of local and remote mismatch (#332)
* OneShotServer termination was fixed by WilliamBruneau (#343)
* Known issue with 3.8 for CodeType parameters (may drop Python2 support first)

- update to 4.1.0
* Added connection back-off and attempts for congested workloads
* Cross-connection instance check for cached netref classes

- Fix test execution to make sure we run it under all interpreters