YITH WooCommerce Ajax Product Filter Premium 5.5.0

* New: Greek translation
* Update: YITH plugin framework
* Fix: issue with legacy widgets counts (inverted parameter)
* Fix: disable by default suppress conditional tags, to avoid template problems
* Fix: improve suppress canonical_redirect, to apply whenever filtering
* Fix: query method can now retrieve all presets, instead of being limited to latest 5

>New: Support for WooCommerce 4.6
>Update: plugin framework
>Dev: yith_wcan_ywccl_support hook to disable the integration with Colors and Labels plugin

* New: Support for WooCommerce 4.5
* New: Support for WordPress 5.5
* New: Support for YITH WooCommerce Wishlist
* Update: plugin framework
* Fix: Dropdown filter disappears if a filter match with a single product
* Dev: yith_wcan_filter_label_text hook to filter label text