v3.0.0 (2015-10-11) v2.0.0 (2015-09-12) Bug Fixes ensure single space separation and trimmed returned string (a31cd402) Breaking Changes due to a31cd402, The returned combined class names string no longer have consectutive spaces between class names. v1.0.1 (2015-09-12) Bug Fixes ignore empty array arguments (4171b88a) v1.0.0 (2015-09-09)