Formatting
New test case for concurrent reading (threading)
Drop file handlers caching
Small cleanup
Update the 'tailoring atexit hooks' recipe to be compatible with the new FileRegistry
_FileRegistry now inherits from 'object' (see gh-314)
fix for #322
added version
Merge remote-tracking branch 'scopatz/hdf5-v-warning' into develop
Use constants defined in req_versions.py in the setup script
Update internal blosc to v1.3.2
Update sw versions in the doc
Merge branch 'avalentino-nofilecache' into develop

Conflicts:
	RELEASE_NOTES.txt
	tables/file.py
	tables/tests/test_basics.py