Added:
* functions for reading PolyChord .stats files.
* dummy_data.py: separate module for making dummy nested sampling run data (for testing).
* write_polychord_output.py: functions for writing nestcheck format nested sampling runs (python dictionaries) to PolyChord-format output files. Used in testing and by dyPolyChord.
Changed:
* likelihoods and priors in diagnostics_paper_code.ipynb now input and output parameters as numpy arrays (used by PolyChord v1.14) rather than lists (used by PolyChord <= v1.13).
* Various minor additions and improvements to the documentation and tests.