commits: 85ded913d030dda8eb1f3ed18db76b32a9f9ca2d

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
85ded913d030dda8eb1f3ed18db76b32a9f9ca2d	fill_value in shift (#2470) * enable fill_value in shift * whatsnew * docstrings * should we make some dataarray methods avoid rtp-ing to dataset? * revert joining doc start * code comments * WIP * pad use dict rather than kwargs * handle 'missing' values in a more consistent way in shift * whatsnew move	2018-12-27T22:58:29Z	2018-12-27T22:58:29Z	279c587273ec459ffb5192e60bf8447c05601fa5	f10b21bed2846b879806f87039b77245b18e7671	13221727	5635139	1217238