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

app/Services/VersionService.php

@@ -153,6 +153,12 @@ class VersionService extends Service
 
         $c = $cfg['current'];
         $version = "{$c['major']}.{$c['minor']}.{$c['patch']}";
+        if ($c['prerelease'] !== '') {
+            $version .= "-{$c['prerelease']}";
+            if ($c['buildmetadata'] !== '') {
+                $version .= ".{$c['buildmetadata']}";
+            }
+        }
 
         if ($include_build) {
             // Get the current build id