close hdf5 files, use hdfpy 3.12

[sneakers-the-rat]

There wasn't actually a bug in h5py 3.12, hdf5 just started enforcing consistent behavior on locking the same file when it's open in multiple places, as explained here:
h5py/h5py#2506

u live and u learn

[coveralls]

Pull Request Test Coverage Report for Build 11063851845

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.757%

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Totals
Change from base Build 11043742688:	0.0%
Covered Lines:	1192
Relevant Lines:	1207

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💛 - Coveralls