raise dependency on nikic/php-parser 5.7.0
raise dependency on sebastian/environment 7.2.1
raise dependency on theseer/tokenizer 1.3.1

raise dependency on nikic/php-parser 5.4.0

re-license spec file to CECILL-2.1

raise dependency on nikic/php-parser 5.3.1
raise dependency on phpunit/php-file-iterator 5.1.0
raise dependency on sebastian/version 5.0.2

raise dependencies