Calculator hours and minutesv13.0.8 / 14.0.08

What changed

• New featureAdded Undo and Redo functionality for calculations
• New featureAdded quick sign inversion (+/-) button
• New featureAdded constant calculation support via consecutive '=' taps
• UXAdded digit-by-digit backspace button
• UXAdded settings menu to toggle key vibration feedback
• New featureEnhanced memory banks and history with date/time stamps
• PlatformAdded compatibility for Android 15

Original release notes

What's new in CalcTime!

✨ Undo & Redo: Step back/forward through calculations (↩/↪).
± Quick sign inversion (+/-).
🔁 Constant calculation: Repeat last operation by tapping '=' consecutively.
⌫ Backspace button (digit by digit).
⚙️ Settings menu: Toggle key vibration feedback.
🧠 Enhanced Memory Banks & History with date/time.
🚀 Android 15 compatibility.