WooCommerce Deposits 2.2.8

* Fix - Issue with spinner on checkout screen.

* Fix - Activation message persisted even when plugin not active.
* Fix - Deposits breaks Memberships Products tab on My Account page.
* Fix - Coupon discount is not applied if the coupon amount is larger than the deposit amount for percentage deposit types.
* Fix - UI appearance compatibility with Product Add-Ons.
* Fix - Error when switching a payment plan order from "scheduled" to "complete".
* Fix - Future payments total incorrect when payment plan is 11 or more.

* Fix - Display of future discounts and correct discounted future payments not shown in order received and emails.
* Update - WC tested up to 3.3.