Fix Math.pow(-1, +Infinity) => NaN
Fix Date.parse to parse RFC1123
Fix Date(...) to be different from new Date(...)
Document problematic date/time behavior
Fix Date.parse.length = 1
Fix Date.UTC.length = 7
Fix Date.prototype.set(UTC)Seconds.length = 2
Fix Date.prototype.set(UTC)Minutes.length = 3
Fix Date.prototype.set(UTC)Hours.length = 4
Fix Date.prototype.set(UTC)Month.length = 2
Fix Date.prototype.set(UTC)FullYear.length = 3