YITH WooCommerce Compare Premium 2.36.0

* New: Support to WooCommerce 3.7.0
* Update: Plugin Core
* Fix: Removed social Google+ from plugin socials list
* Dev: New filter 'yith_woocompare_compare_button_target'

* Update: plugin framework 3.2.1
* Dev: new filter 'yith_woocompare_remove_label'
* Dev: new filter 'yith_woocompare_remove_icon'

* New: Support to WooCommerce 3.6.0 RC1
* Update: Spanish language
* Update: Plugin Core
* Fix: Compatibility issue with Show Single Variations plugin
* Fix: Moved init action priority from 1 to 10 to prevent missing WC post types
* Tweak: Sync AJAX requests to prevent error in compare table