Radical.utils

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- add callbacks to pulling end of pipe
- zmq startup is faster than we think
- remove MacOS support

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- don't claim macos support
- allow client logging
- delay opening of logfile until first write
- delay profile opening
- fix registry dump
- get better port numbers to simplify tunneling

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- remove an obsolete monkeypatch

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- ensure `version_detail` is not `None`

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- fix zmq log levels
- simplify log switching for zmq

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- add complete ru zmq examples
- apply blacklist