some small changes

[guptaarth87]

No description provided.

[coveralls]

Coverage remained the same at 73.061% when pulling f8c2d1e on guptaarth87:master into 291c769 on anhaidgroup:master.

[christiemj09]

Thanks for your interest in contributing to py_stringsimjoin! If you'd like to contribute to one of the PyMatcher packages, here's a good first issue for py_entitymatching, a related package.