commits: 0479b2d50ace39b02cf58a7131d91b64ad484e90

This data as json

sha	message	author_date	committer_date	raw_author	raw_committer	repo	author	committer
0479b2d50ace39b02cf58a7131d91b64ad484e90	Typing support for custom backends (#6651) * add str to allowed engine types * Update xarray/backends/api.py * Update xarray/backends/api.py * Update xarray/backends/api.py Co-authored-by: Illviljan <14371165+Illviljan@users.noreply.github.com>	2022-05-28T10:29:15Z	2022-05-28T10:29:15Z	35fc880d36ffaae3dc85d643a29d4421ae62cc8e	cd792325681cbad9f663f2879d8b69f1edbb678f	13221727	43316012	19864447