0.2.2

releaseHeader('2010-01-10', '0.2.2', '0.2.1')

When performing a comprehension over an object, use ino, instead of in, which helps us generate smaller, more efficient code at compile time. Added :: as a shorthand for saying .prototype. The “splat” symbol has been changed from a prefix asterisk *, to a postfix ellipsis ... Added JavaScript’s in operator, empty return statements, and empty while loops. Constructor functions that start with capital letters now include a safety check to make sure that the new instance of the object is returned. The extends keyword now functions identically to goog.inherits in Google’s Closure Library.