MAINT: removed h5py warning, see #559
Merge pull request #560 from wasade/remove_h5py_warning

MAINT: removed h5py warning, see #559
ENH: order of magnitude performance bump in nonzero
DOC: changelog mention
ENH/API: added Table.length, see #548
DOC: changelog mention
STY: flake8
Merge pull request #561 from wasade/nonzero_performance_bump

Nonzero performance bump
Merge branch 'master' of github.com:biocore/biom-format into add_length

Conflicts:
	ChangeLog.md
Merge pull request #562 from wasade/add_length

Add length
ENH: order of magnitude improvement on parsing HDF5 BIOM tables, fixes #529
DOC: changelog mention
Merge branch 'master' of github.com:biocore/biom-format into parser_speed_bump

Conflicts:
	ChangeLog.md
ENH: iteritems, thanks @adamrp
Merge pull request #563 from wasade/parser_speed_bump

Order of magnitude improvement on HDF5 parser speed
REL: 2.1.1
Merge pull request #564 from wasade/bump_to_2.1.1

REL: 2.1.1
Bump version on init