WooCommerce Smart Coupons 9.18.0

* New: WooCommerce 3.0+ compatibility
* New: Use of PHP classes for different features (Distributed code from single file to multiple files)
* New: Filter for setting coupon meta data for other types of coupon added by 3rd party plugins
* Update: Will now support only WooCommerce 2.5+
* Update: Formatted coupon label support for 3rd party plugins
* Update: POT file

* Fix: Discount added by store credit is not being passed to PayPal, if discount applied is more than cart item total
* Fix: Coupons missing under "My Account" if product/category restriction present
* Fix: Coupon not shown in email confirmation when paying for a Gift certificate with PayPal Express
* Update: Limit number of coupons to show on cart, checkout & my-account page (Default: 5, can be modified using database or filter)
* Update: Added currency symbol to price in "Total Credit Amount" in Coupons tab on My Account page
* Update: CSS for "Total Credit Amount" in Coupons tab on My Account page
* Update: POT file

* New: Show Store Credit & other coupons separately on Coupons tab under My Account page (WooCommerce 2.6+)
* New: Show total credit amount available to reedem on Coupons tab under My Account page (WooCommerce 2.6+)
* Update: Do not show Coupon Received section on My Account page (can be changed via option - show_coupon_received_on_my_account)
* Update: CSS tweaks for showing scroll bar on Cart & Checkout page for coupons
* Update: POT file