Update draft release notes for 9.2.

Author: oguzkocer

WooCommerce/Resources/release_notes.txt

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-We spent some time fixing those bugs that made the app harder to use. One of those involved weight and shipping package dimensions on a product. Entering values with commas to separate decimal values works as expected now. Thanks to everyone who reported this! Your feedback is vital to us!
+- [***] Experimental Features: Coupons editing and deletion features are now enabled as part of coupon management. [https://github.com/woocommerce/woocommerce-ios/pull/6853]
+- [*] Order Creation: Updated percentage fee flow - added amount preview, disabled percentage option when editing. [https://github.com/woocommerce/woocommerce-ios/pull/6763]
+- [*] Product Details: Update status badge layout and show it for more cases. [https://github.com/woocommerce/woocommerce-ios/pull/6768]
+- [*] Coupons: now, the percentage amount of coupons will be displayed correctly in the listing and in coupon detail if the amount contains fraction digits. [https://github.com/woocommerce/woocommerce-ios/pull/6804]
+- [*] Coupons: Filter initial search results to show only coupons of the currently selected store. [https://github.com/woocommerce/woocommerce-ios/pull/6800]
+- [*] Coupons: Fixed crash when there are duplicated items on the coupon list. [https://github.com/woocommerce/woocommerce-ios/pull/6798]
+- [*] In-Person Payments: Run onboarding checks when connecting a reader. [https://github.com/woocommerce/woocommerce-ios/pull/6761, https://github.com/woocommerce/woocommerce-ios/pull/6774, https://github.com/woocommerce/woocommerce-ios/pull/6789]
+- [*] In-Person Payments: after collecting payment for an order, merchants can now email the receipt in addition to printing it in Order Details > See Receipt if email is available on the device. [https://github.com/woocommerce/woocommerce-ios/pull/6833]
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