Update dependencies
Add final modifier to immutable fields
Use concrete classes instead of interfaces
Add moz compatibility option for extended precision
Update step references and comments
Add global System object
Add ExecutionContext parameter to internal methods
Throw TypeError for [[HasProperty]] on uninitialised typed array object
Add identifier for native functions
RegExp.prototype.test delegates to exec (rev22)
Update to reflect resolution from bug 2297
Update exclusion lists
Use concrete return types for call()
Add workaround for bug 2578
Store case fold data in memory to avoid recomputation
Update language-subtag data