version 2.21.1: Reports accuracy and bug fixes

🐛 Bug Fixes

Merchant percentages in reports - Fixed an issue where merchant spending percentages could exceed 100%, making the breakdown inaccurate.
Duplicate transaction editing - Fixed a bug where duplicating a transaction and then changing the payee, category, or account had no effect.
Changelog not appearing - Fixed the changelog sheet not showing when opening the app after an update.

Improved reports layout - Reports now use net-based classification, so each category appears in only one section (Inflow or Outflow) instead of both. The reports UI has also been refreshed with better section organization.