Calculator Plus

Hi Everyone, time for new release.

• New UI 😎🔥
• Full Kotlin rewrite & migrate all functionalities
• Update app target to API 30 (Android R)
• Removed extra themes
• Add support for light/dark theme based on device settings
• Add button haptic feedback, if enabled by device
• Add Firebase crashlytics to detect app crashes
• Fixed Application hangs when given a long expression
• Fixed Operator after decimal