Update draft release notes for 8.3.

Author: jkmassel

WooCommerce/Resources/release_notes.txt

@@ -1,3 +1,7 @@
-Sometimes you just need to create a quick order to take a payment from your customer for a transaction you’re doing in-person, like at a trade show. We added a new option for you to create Simple Payments! Head over to the Orders tab to make a quick order to record that transaction. We are working hard on full order creation as well – and you’ll see that later this year.
+- [***] All merchants can create Simple Payments orders. [https://github.com/woocommerce/woocommerce-ios/pull/5684]
+- [**] System status report can now be viewed and copied directly from within the app. [https://github.com/woocommerce/woocommerce-ios/pull/5702]
+- [**] Product SKU input scanner is now available as a beta feature. To try it, enable it from settings and you can scan a barcode to use as the product SKU in product inventory settings! [https://github.com/woocommerce/woocommerce-ios/pull/5695]
+- [**] Now you chan share a payment link when creating a Simple Payments order [https://github.com/woocommerce/woocommerce-ios/pull/5819]
+- [*] Reviews: "Mark all as read" checkmark bar button item button replaced with menu button which launches an action sheet. Menu button is displayed only if there are unread reviews available.[https://github.com/woocommerce/woocommerce-ios/pull/5833]
+- [internal] Refactored ReviewsViewController to add tests. [https://github.com/woocommerce/woocommerce-ios/pull/5834]
 
-We also fixed a bug with the site visitors count not showing up on the Today tab on your store’s dashboard. Thanks for letting us know! 💜