* Feature - Option to display login buttons in Product Reviews Pro forms
* Tweak - Ensure an admin notice is displayed if cURL isn't enabled
* Misc - Update SkyVerge plugin framework
* Fix - Some provider-specific settings were not being shown in admin
* Fix - Ensure HybridAuth logs out from all providers when WP session is terminated
* Misc - Upgraded HybridAuth authentication library to v2.9.4
* Misc - Fire wp_login action when logging in via Social Login
