3.0.0

• use splitbrain/phpfarm:jessie as Docker image and fix docker image settings
• Code requires PHP >= 7.4
• Code cleaning
• BC:
  • WsdlToPhp\PhpGenerator\Element\PhpFunction::__construct has a new parameter after the $parameters parameter named $returnType which is a string allowing to set the function return type
  • WsdlToPhp\PhpGenerator\Element\PhpMethod::__construct has a new parameter after the $parameters parameter named $returnType which is a string allowing to set the method return type
  • WsdlToPhp\PhpGenerator\Component\PhpClass::addMethod has a new parameter after the $parameters parameter named $returnType which is a string allowing to set the method return type
  • WsdlToPhp\PhpGenerator\Component\PhpInterface::addMethod has a new parameter after the $parameters parameter named $returnType which is a string allowing to set the method return type
• Implementation of the PHP declare statement
• GenerateableInterface elements and components now implement the __toString method
• Update READMEs
• Update Travis CI settings
• Update PHPUnit settings
• Update LICENSE file
• Version 2.0 is no more maintained