v1.6 (#421) * version bump * Added --ease-anticipate-* easings (#419) * breaking change: added --ease-elastic-in, renamed --ease-elastic-* and --ease-squish-* to --ease-elastic-out-* and --ease-elastic-in-out-* * Update docsite/index.css Fixed typo from refactor in docsite/index.css as per Adam's comment Co-authored-by: Adam Argyle <argyle@google.com> * adjusted tests to correspond to additional props we added --------- Co-authored-by: Alex Li <alex.li@twosigma.com> Co-authored-by: Adam Argyle <argyle@google.com> * document and create fallback * update tests --------- Co-authored-by: Alex Li <aml7hqv@virginia.edu> Co-authored-by: Alex Li <alex.li@twosigma.com>