Version 0.2.1 (2014-02-25)

• Fix edge case when (accidentally) supplying only one argument, and that
  argument happens to be a falsy value such as undefined or null.

Version 0.2.0 (2014-02-24)

• Disallow passing 0 arguments. It’s weird and inconsistent between browsers.
  (Backwards incompatible change.)

Version 0.1.0 (2014-02-23)

• Initial release.