1 Upgrading from Panels-6.x-3.x to Panels-7.x-3.x
3 - Style and layout plugins may no longer be registered by a central hook.
4 Only the plugin directories method may be used.
6 - Layout 'panels function' is now 'regions function'.
8 - Layout 'panels' key is now 'regions'.
10 - panels_get_pane_title() deprecated.
12 - panels_plugin_get_function() deprecated.
14 - panels_required_context removed. These were deprecated long ago and
15 existed only to prevent crashes.
17 - panels_optional_context removed.
19 - $renderer->plugins['layout']['panels'] changed to $renderer->plugin['layout']['regions']
21 - display_renderer class is now in 'renderer', not 'handler'.