Modelled on OPENVDB_USE_BLOSC, it would be nice to introduce OPENVDB_USE_ZLIB that could be used to make the zlib compression library an optional dependency.

This should be added to the core library, the CMake build system and the OpenVDB Read SOP and should default to ON.

I am getting the following error on windows:

Exception in thread Thread-120:
Traceback (most recent call last):
  File "[...]\deploy\py37\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "[...]\deploy\py37\lib\site-packages\rqd-unknown-py3.7.egg\rqd\rqcore.py", line 540, in run
    self.__sendFrameCompleteReport()
  File "[...]\deploy\py37\lib\site-packages\rqd-

So far we have relied largely on demonstrative notebooks
at https://github.com/rsvp/fecon235

The source code here at fecon236 is designed to be more
explicit than casual usage, so if you have experience in
setting up a nice documentation framework, please
kindly volunteer.

The current "docs" need a complete redo, one that starts from fresh eyes.
Nobody peeks at the source code unless t