WooCommerce Points and Rewards 1.8.10

* Fix - Typo $points_earnedo should be $points_earned

* Fix - My Account Points tab not found after visiting permalinks page.
* Fix - Allow usage of % sign in points modifier field for coupons.
* Fix - Round points at the last possible moment to avoid rounding errors.
* Fix - Improve compatibility with product discounts applied by WooCommerce Memberships
* Fix - PHP notice for non-numeric value on the cart screen.

Fix - My Account Points tab would sometimes render 404 error.
* Fix - Changing points label would sometimes cause My Account Points tab to render 404 error.
* Fix - When in cart selecting cancel on partial points redemption still applied the points.
* Update - WC tested up to 3.5