[API] Added hooks for selecting building prefab and calculating the size for Instantiate Prefab.
[Buildings] Fixed positioning of buildings when the container is not in zero position.
[Buildings] Added building placement modes for Instantiate Prefabs.
[Heightmap] Fixed generation of underwater depths when generating terrain grid.
[Inspectors] Added the ability to split the terrains grid into separate GameObjects.
[Windows] Fixed calculation of memory usage when using Huge Texture.