* 1194: Review assignments of range in Python code
Task-Url: https://github.com/rdkit/rdkit/issues/1194
Either wrapped the range expression into a list or made sure that the
code is working with a range object.
* Refactored FeatFinderCLI script
* Add unit test file for CLI apps in rdkit.Chem
Add tests for FeatFinderCLI
* Renamed the unit test file
* Slight improvement to test coverage
* Address comments from review
* Add script to Scripts folder #1305
