Includes PHPDoc license tag in the file-level block with accompanying copyright notice.
Also added an AUTHORS file on the off chance of outside contributions
- RuntimeData has now been replaced by a single static Data class
- The Data class has a load() method which fills the same role as the constructor of RuntimeData
- The static Lang class is now an instantiable class and is a member of Data
- All tests have been adjusted and pass
- The Exception tests no longer require convoluted workarounds: a simple mock for Data::$l suffices; Lang tests also use a mock to prevent loops now instead of using a workaround
