commits: 50f897058e361ba4d9f2ebf048a31b18a7521c2b

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
50f897058e361ba4d9f2ebf048a31b18a7521c2b	Internal clean-up of isnull() to avoid relying on pandas (#3132) * Internal clean-up of isnull() to avoid relying on pandas This version should be much more compatible out of the box with duck typing. * Use isnat ufunc * update comment	2019-08-05T03:29:19Z	2019-08-05T03:29:19Z	f10b21bed2846b879806f87039b77245b18e7671	cd792325681cbad9f663f2879d8b69f1edbb678f	13221727	1217238	19864447