Not compatible with PHP 7.4

[willsmanley]

Function ReflectionType::__toString() is deprecated

[willsmanley]

Specifically it is line 178 and line 191 in the latest version of MacrosCommand.php:

$this->write($parameter->getType() . " ");
$this->write(": $returnType");

I forked the library so I could comment out those parts and it hasn't affected my ability to generate a good helper file since those two parts aren't essential for autocompletion.

[KristofMorva]

It's a duplication of #15 (which also has a proposed solution)