Switch execution order of testsuites, unit tests first

Unit tests usually run faster and provide more fine-granular feedback if something is broken. If some small part of the application is broken, it may easily cause all the feature tests to fail, while not providing useful feedback.

phpunit.xml

@@ -9,13 +9,13 @@
          processIsolation="false"
          stopOnFailure="false">
     <testsuites>
-        <testsuite name="Feature">
-            <directory suffix="Test.php">./tests/Feature</directory>
-        </testsuite>
-
         <testsuite name="Unit">
             <directory suffix="Test.php">./tests/Unit</directory>
         </testsuite>
+        
+        <testsuite name="Feature">
+            <directory suffix="Test.php">./tests/Feature</directory>
+        </testsuite>
     </testsuites>
     <filter>
         <whitelist processUncoveredFilesFromWhitelist="true">