Create exp bar
unit-info-window refactoring
Begin work on level up window
Fix weapon menu bug
Work on level up window
Complete level up window
unit-info-window label text
exp-bar and level-up-window are mostly done
Experience calculation
Refactoring in unit and uclass
Fix bug introduced in refactoring
Level up complete!
"Can wield", "can use"
Add "Trade" to action menu
Work on trade feature
Work on inventory in trade window
Cursor movement in trade window
trade window: close window and select item
Trading complete except for some bugs
Trading complete.