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As documented https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation
yaml.load uses unsafe loader.

update install_requires package versions

See !16

Given the issues with various version of sympy, this will be useful
for debugging user errors

This is autogenerated by setup.py. Also add cache generation
to 'develop' command.

+ Build the model cache during 'py_build'
+ Do not include the 'kp_models' package as part of the 'semicon'
  distribution
+ Include all databank files, both in the source distribution
  (via MANIFEST.in) and the built package (via 'package_data')

Including the license in the source/binary distributions is actually
required by the conditions of the BSD license.

lazy-loading of 'continuum' has been deprecated