Trac #63 Property to enable/disable code coverage

Added property to Agent and Coverage tasks to enable/disable code coverage (enabled by default)
diff --git a/org.jacoco.doc/docroot/doc/changes.html b/org.jacoco.doc/docroot/doc/changes.html
index 3ff0a5c..434d5f4 100644
--- a/org.jacoco.doc/docroot/doc/changes.html
+++ b/org.jacoco.doc/docroot/doc/changes.html
@@ -28,6 +28,7 @@
 

 <h3>New Features</h3>

 <ul>

+  <li><code>enabled</code> property added to <a href="ant.html#agent">Agent</a> and <a href="ant#coverage">Coverage</a> tasks (Trac #63).</li>

 </ul>

 

 <h3>Fixed Bugs</h3>