- implemented Zyin's idea of a column-only selection mode

- added mode button and config
- behavior change: because releasing the modifier key now confirms selection, it was virtually impossible to "cancel" the selection. now, the timeout cancels the selection,
- increased default timeout again
- inversed scrolling direction
fix for #9
Merge branch 'fix9'
- switched back to using InventoryUtil.Swap (original issue found and fixed)

- updated language for ItemSelector ticks config