v2.1.7
* Fix pandas dependency, pinned to `pandas>=1.0.0,<=1.1.4` to prevent 'pandas.errors.InvalidIndexError: Reindexing only valid with uniquely valued Index objects'. * Add min version for numpy<=1.16.5 to match pandas requirement. * Remove unused cython requirement. * Add README.md and requirements.txt to package MANIFEST.in * Bump package version and add short description to setup.py