diff --git a/panels.info b/panels.info
index 271f3bbcc00768f7e2f4000a9ee911a9c4788936..48a1a95f6af94cc2134dc742027760693127991c 100644
--- a/panels.info
+++ b/panels.info
@@ -2,6 +2,7 @@ name = Panels
 description = Core Panels display functions; provides no external UI, at least one other Panels module should be enabled.
 core = 7.x
 package = "Panels"
+version = PANELS_VERSION
 configure = admin/structure/panels
 dependencies[] = ctools (>1.5)
 files[] = panels.module
diff --git a/panels.module b/panels.module
index 9d7ef6f053a804e32fd517464896dcb03449eff3..ddd5db234340ac763dcb0e874fef4aeaf50029a2 100644
--- a/panels.module
+++ b/panels.module
@@ -6,7 +6,22 @@
  * Core functionality for the Panels engine.
  */
 
-define('PANELS_REQUIRED_CTOOLS_API', '2.0-alpha');
+define('PANELS_REQUIRED_CTOOLS_API', '2.0.8');
+
+/**
+ * The current working panels version.
+ *
+ * In a release, it should be 7.x-3.x, which should match what drush make will
+ * create. In a dev format, it should be 7.x-3.(x+1)-dev, which will allow
+ * modules depending on new features in panels to depend on panels > 7.x-3.x.
+ *
+ * To define a specific version of Panels as a dependency for another module,
+ * simply include a dependency line in that module's info file, e.g.:
+ *   ; Requires Panels v7.x-3.4 or newer.
+ *   dependencies[] = panels (>=3.4)
+ */
+define('PANELS_VERSION', '7.x-3.5-dev');
+
 
 define('PANELS_TITLE_FIXED', 0); // Hide title use to be true/false. So false remains old behavior.
 define('PANELS_TITLE_NONE', 1); // And true meant no title.
@@ -1332,10 +1347,6 @@ function template_preprocess_panels_pane(&$vars) {
     $vars['more'] = l($content->more['title'], $content->more['href'], $content->more);
   }
 
-  if (!empty($content->attributes)) {
-    $vars['attributes_array'] = array_merge($vars['attributes_array'], $content->attributes);
-  }
-
   $vars['content'] = !empty($content->content) ? $content->content : '';
 
 }
diff --git a/panels_ipe/panels_ipe.info b/panels_ipe/panels_ipe.info
index b0172a7602617aef9754e73f0c87d7a8210b28ce..1056294a89ababfe1c3f3ebe715be92f8125fe8e 100644
--- a/panels_ipe/panels_ipe.info
+++ b/panels_ipe/panels_ipe.info
@@ -1,6 +1,7 @@
 name = Panels In-Place Editor
 description = Provide a UI for managing some Panels directly on the frontend, instead of having to use the backend.
 package = "Panels"
+version = PANELS_VERSION
 dependencies[] = panels
 core = 7.x
 configure = admin/structure/panels
diff --git a/panels_mini/panels_mini.info b/panels_mini/panels_mini.info
index 0eae9f58d2f46651b50b1a60b11d74a26354f6a5..470a1db646de46f772a62aedf52fc79aef373994 100644
--- a/panels_mini/panels_mini.info
+++ b/panels_mini/panels_mini.info
@@ -1,6 +1,7 @@
 name = Mini panels
 description = Create mini panels that can be used as blocks by Drupal and panes by other panel modules.
 package = "Panels"
+version = PANELS_VERSION
 dependencies[] = panels
 core = 7.x
 files[] = plugins/export_ui/panels_mini_ui.class.php
\ No newline at end of file
diff --git a/panels_node/panels_node.info b/panels_node/panels_node.info
index 95ad2df609d27fd2ad705d1207e378e53151090a..73d215acee215c2f35291b55c7a13d13a08b2d15 100644
--- a/panels_node/panels_node.info
+++ b/panels_node/panels_node.info
@@ -1,6 +1,7 @@
 name = Panel nodes
 description = Create nodes that are divided into areas with selectable content.
 package = "Panels"
+version = PANELS_VERSION
 dependencies[] = panels
 configure = admin/structure/panels
 core = 7.x