Update readme

README.md

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 ## Features
 
-- **Supports Dark Mode:** Seamlessly switch between light and dark themes.
-- **Multiple Themes:** Choose from a variety of themes to personalize your calculator.
-- **Customizable Buttons:** Customize individual calculator buttons to your liking.
-- **Font Customization:** Don't like the default font? Change it easily in the settings.
+* **Supports Dark Mode:** Seamlessly switch between light and dark themes for optimal viewing comfort.
+* **Multiple Themes:** Choose from a variety of themes to personalize your calculator and match your style.
+* **Customizable Buttons:** Tailor individual calculator buttons to your preference for a truly unique experience.
+* **Font Customization:** Don't like the default font? Change it easily in the settings to match your taste.
+* **Enhanced Calculation History:**  **Recall your Calculations with Ease:** Keep track of your calculations with a comprehensive and easily accessible history.
 
 ## Get the App!