2.4.0 (2014-03-17)

• All textdomain strings now made to tgmpa and remove all notices dealing with textdomain and translation issues.
• The _get_plugin_basename_from_slug method now checks for exact slug matches to prevent issues with plugins that start with the same slug.
• Commenting style now adjusted so it is easier to comment large chunks of code if necessary.
• Plugins from an external source now properly say Private Repository in the list table output.
• add_submenu_page has been changed to add_theme_page for better theme check compatibility.
• Removed the use for parent_menu_slug and parent_menu_url for $config options (see above).
• Nag messages can now be forced on via a new dismissable config property. When set to false, nag cannot be dismissed.
• New config dismiss_msg used in conjunction with dismissable. If dismissable is false, then if dismiss_msg is not empty, it will be output at the top of the nag message.
• Better contextual message for activating plugins - changed to "Activate installed plugin(s)" to "Begin activating plugin(s)".
• Added cache flushing on theme switch to prevent stale entries from remaining in the list table if coming back to a theme with TGMPA.
• TGMPA is now a singleton to prevent extra settings overrides.
• Fixed bug with duplicating plugins if multiple themes/plugins that used TGMPA were active at the same time.
• Added contextual message updates depending on WordPress version.
• Better nag message handling. If the nag has been dimissed, don't even attempt to build message (performance enhancement).
• Ensure class can only be instantiated once (instantion moved inside the class_exists check for TGMPA).
• Change instances of admin_url to network_admin_url to add better support for MultiSite (falls back gracefully for non-MultiSite installs).
• Updated much of the code to match WP Coding Standards (braces, yoda conditionals, etc.).
• Myriads of other bug fixes and enhancements