Fixed the access to private static properties and methods
Changed the error message about the PHP requirement to go to STDERR
Merge pull request #445 from stof/patch-3

minor #445 Changed the error message about the PHP requirement to go to STDERR (stof)
Merge pull request #444 from stof/patch-2

minor #444 Fixed the access to private static properties and methods (stof)
Token::isEmpty - new method
IncludeFixer - fix for #439