Add PHP 7.4 support (#464)

* Add PHP 7.4 to build matrix

* DB fix

* YAML parser fix in test data

* Show versions

* Package updates

* Track used ICAOs

* 7.4 METAR parsing fix

* METAR parser fix

* Formatting

* Add meters to response units

* Call instance for unit conversion

* Return value

* Catch exception for unknown quantity

* Comment fix

* Formatting

* METAR parsing fixes on PHP 7.4

* Package updates

* More random airport ID

* More random airport ID

* Properly disable toolbar

* Semver written out to version file

* Use dev as default identifier

resources/stubs/installer/config.stub

@@ -17,7 +17,8 @@ return [
 
         // debug as true shows the Laravel debug bar, which is helpful for
         // debugging templates and other internals
-        'debug' => true,
+        'debug'         => true,
+        'debug_toolbar' => false,
     ],
 
     // Overrides config/phpvms.php