Add command line utility `run_analysis`; Improve and extend unittests
- Add command line utility for vimuq analysis (
run_analysis
) - Fix import problems that occurred when tests were run from the project home directory with
unittest discover
- Increase test coverage
- Add Model subclass PyModel that allows for embedding models that are written in python, e.g. SALib's Ishigami function
- Add Ishigami test method
- Restructure test directory