commits: 2aa5b8a5c094593569f5bd9ae220d1f2fc0ecda0

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
2aa5b8a5c094593569f5bd9ae220d1f2fc0ecda0	Use getitem_with_mask in reindex_variables (#1847) * WIP: use getitem_with_mask in reindex_variables * Fix dtype promotion for where * Add whats new * Fix flake8 * Fix test_align_dtype and bool+str promotion * tests and docstring for dtypes.result_type * More dtype promotion fixes, including for concat	2018-02-14T13:11:47Z	2018-02-14T13:11:47Z	f10b21bed2846b879806f87039b77245b18e7671	caabe6633d9bef7f2f52807cc5a1f477f3a077d4	13221727	1217238	6815844