Fix missing properties.

src/Mustache/Engine.php

@@ -45,6 +45,11 @@ class Mustache_Engine
     private $logger;
     private $strictCallables = false;
 
+    // Services
+    private $tokenizer;
+    private $parser;
+    private $compiler;
+
     /**
      * Mustache class constructor.
      *

src/Mustache/Loader/ArrayLoader.php

@@ -26,6 +26,7 @@
  */
 class Mustache_Loader_ArrayLoader implements Mustache_Loader, Mustache_Loader_MutableLoader
 {
+    private $templates;
 
     /**
      * ArrayLoader constructor.

src/Mustache/Logger/StreamLogger.php

@@ -31,6 +31,7 @@ class Mustache_Logger_StreamLogger extends Mustache_Logger_AbstractLogger
         self::EMERGENCY => 600,
     );
 
+    protected $level;
     protected $stream = null;
     protected $url    = null;