* created new package for injuring multiple units - needed for area spells (not tested)
* proper screen updating on garrison change
* spell effects will be removed when they time out
* Corpse (Skeleton) will be accessible from all directions
* new objects supported:
- Corpse
- Lean To
- Wagon
- Warrior's Tomb
* several minor improvements
* unified yes/no and selection dialog interface calls
* VCMI won't anymore be always giving all three stacks in the starting armies
* fix for drawing starting army creatures count
* support for School of Magic
* support for School of War
* support for Pillar of Fire
* minor changes
* fixed crash when loading map with a mine belonging to human player
* fixed crash on moving hero into town garrison
* fixed r-click infowindow for towns
* new sight radious calculation. Works as OH3 for heroes, towns and probably all objects. (to be tested)
