* Add support for Drupal
* Implement more logic to handle Drupal 6, Drupal 7 and Drupal 8
* Additional fixes for Drupal 8 install. Removed note about Drupal 6 since it doesn't work properly beyond PHP 5.3.
* Rewrite front controller check for Drupal 8
* Correct the return type annotation in a serves method
* Type-hint the driver in the abstract ValetDriver
* Correct the return type-hint in the sample ValetDriver
* Remove the return afrom the restartLinkedPhp method
* Remove the return annotation from the Caddy constructor
* Remove the return annotation from the Valet configuration constructor
* Removed the return from the prependPath method of the Configuration class
* Removed the return from the appendAsUser method of the Filesystem class
* Removed the return annotation from the Site constructor
* Corrected the parameter annotation of the link method in the Site class
* Order use statements by length in PhpFpm
* Remove the return annotation from the Valet constructor
