Update readme.txt

readme.txt

@@ -171,9 +171,11 @@ Active development of Donation Platform for WooCommerce: Fundraising & Donation
 = 1.3.0 =
 new: leaderboard shortcode
 new: compatibility mode: run donation platform and webshop simultaneously
+new: delete cache function
 new: compatibility with WooCommerce API
 fix: compatibility with the newest version of PDF Invoices & Packing Slips for WooCommerce, thanks to @kprovance [#40](https://github.com/jonas-hoebenreich/wc-donation-platform/issues/40)
 tweak: do not allow to embed donation form when using AJAX
+tweak: improve revenue cache calculation
 tweak: update the revenue of a product directly for small webshops
 tweak: set supported WP version to 6.3
 tweak: set supported WooCommerce version to 8.0.1