Now also use Grint phplint.
Fixed Warning: PHP Strict Standards:  Static function Pronamic_Gateways_PayDutch_XML_Parser::parse() should not be abstract in classes/Pronamic/Gateways/PayDutch/XML/Parser.php on line 17
Fixed Warning: PHP Strict Standards:  Static function Pronamic_Gateways_Sisow_XML_Parser::parse() should not be abstract in classes/Pronamic/Gateways/Sisow/XML/Parser.php on line 17