YITH WooCommerce Quick Export Premium 1.3.8

* Update: Updated Plugin Framework

* New: Support to WooCommerce 3.5.0
* Tweak: new action links and plugin row meta in admin manage plugins page
* Update: Italian language
* Update: Spanish language
* Update: Dutch language
* Update: Updated Plugin Framework
* Update: updated the official documentation url of the plugin
* Dev: new filter yith_ywqe_settings_panel_capability

Update: plugin framework 3.0.11
New: support to WooCommerce 3.0.0