Travel Calculator

Invalid date

v1.8.3:
1. Add date/time field to expense tracking list items. Now you can check the expense record time.
2. Upgrade transmission protocol to https to enhance security.
3. Upgrade ICON to adaptive version for different Android platforms.
4. Upgrade Google platform tools and other third-party libraries.
5. Fix the problem of expense screen couldn't go back to main calculator on some specific Android versions.