OpCompressedCache: Debug logging.
When casting dtypes, prefer numpy.asarray instead of ndarray.astype.  (The former avoids unecessary copies.)
added h5py to install requirements since it's required...
Reverted the following commit because we want the old and correct travis.yml back.

Revert "DO NOT MERGE TO MASTER: Removed .travis.yml from this branch because this branch currently fails and I don't want to fix it."

This reverts commit 3886eeec5b8875767cdd3455437629f932aa1894.

Conflicts:
	.travis.yml
travis bump
travis bump
travis
travis
travis
travis
fixed travis build