Harris Jos

Add maintainer contact info to README

1

PR to add maintainer contact to README.md. Will close issue #558

Clip small negative values in van_rossum_distance before np.sqrt

2

This PR fixes Issue #679 . Currently `van_rossum_distance` could return `nan` due to extremely small negative values because of floating point errors before applying `np.sqrt`. **Fix** Added check before `np.sqrt`...