Woobewoo WooCommerce Product Filter / WBW Product Filter Pro 3.1.6 Nulled

* Fix - Reverted to 3.1.3 due to stability issues introduced in 3.1.4.

* Fix - Security - Missing authorization vulnerability fixed.
* WC tested up to: 10.6.

* Dev - Admin settings titles updated.

* Dev - Coding standards improved.

* Readme.txt - Rename plugin from "Product Filter by WBW" to "Product Filter for WooCommerce by WBW".

* Dev - Coding standards improved.
* Dev - Rename plugin from "WBW Product Filter PRO" to "Product Filter for WooCommerce by WBW - PRO".

* Dev - License - Logging - More data added.

* Dev - "Check for updates" - Action updated (from `wp` to `init`).

* Dev - Coding standards improved.

* WC tested up to: 10.3.