changelog v1.3

- significantly increased the work speed and walking speed of all units that can gather resources
- fixed all cages breaking when spawning a hobgoblin
- improved the automatic hunting AI (units will first finish harvesting nearby corpses before hunting a new animal)
- fixed goblin hunters shooting houses when carrying back resources
- shortened timers for a lot of objects accordingly such as crawler eggs, berry bushes and fountains
- improved AI picking building locations for houses
- improved pathfinding so units will go to the closest house again
- made some campaign levels shorter