Version 2.3:
- Expense categories (Housing, Transport, Food, Bar, Restaurant, Leisure, Shopping,
  Health, Miscellaneous), with icons, customizable per trip
- Automatic "Reimbursement" category for transfers
- Cost breakdown by category in the Results tab and the PDF
- Swipe an expense right to duplicate it with today's date
- Possible repair of categories for older trips
- Fixed a rounding bug that could show a phantom residual cent
- Expenses sorted chronologically in Results and the PDF
