update phpunit configuration

Author: edgarsn

phpunit.xml.dist

@@ -1,18 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit backupGlobals="false"
-         backupStaticAttributes="false"
          bootstrap="vendor/autoload.php"
          colors="true"
-         convertErrorsToExceptions="true"
-         convertNoticesToExceptions="true"
-         convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false">
-    <coverage>
+    <source>
         <include>
             <directory suffix=".php">./src</directory>
         </include>
-    </coverage>
+    </source>
     <testsuites>
         <testsuite name="Test Suite">
             <directory suffix="Test.php">tests</directory>