Enhancement: add fuzzy join ability

[lminer]

Would be nice to be able to perform a fuzzy join between two dataframes based on string columns. This thread shows how to do it using difflib, but it may be nice to have this as built-in functionality.

[d6tdev]

This is implemented in https://github.com/d6t/d6tjoin, see example https://github.com/d6t/d6tjoin/blob/master/examples-top1.ipynb

[mroeschke]

Seems like there hasn't been much interest in this feature over the years so closing