commits: cbf4921102e3dbb77b9ca774caa48eebc1b27fc2

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
cbf4921102e3dbb77b9ca774caa48eebc1b27fc2	Support dt.floor(), dt.ceil() and dt.round() accessors. (#1827) * Support dt.floor(), dt.ceil() and dt.round() accessors. * Address comments. * Add dask test + dtype. * Add docstrings.	2018-02-11T23:21:18Z	2018-02-11T23:21:18Z	0c7e9e762dbfd6554e60c953bf27493047d95109	f10b21bed2846b879806f87039b77245b18e7671	13221727	2448579	1217238