[Stopwatch] Adding note about the Stopwatch class being added in 2.1 per @stof

weaverryan · weaverryan · commit 593168f431f1 · 2012-11-26T09:43:41.000-05:00
diff --git a/components/stopwatch.rst b/components/stopwatch.rst
@@ -9,7 +9,7 @@ The Stopwatch Component
 
 .. versionadded:: 2.2
     The Stopwatch Component is new to Symfony 2.2. Previously, the ``Stopwatch``
-    class was located in the ``HttpKernel`` component.
+    class was located in the ``HttpKernel`` component (and was new in 2.1).
 
 Installation
 ------------
