Added :
- Added pig entity, its model and all texture from original Minecraft
- Debug control keys to rotate the head of the first world's entity (temporary used to debug pivots)
- Added an animation for the pig when walking, and the system can be easily used for future mobs
- Debug control keys to randomly set the first world's entity motion
Changed :
- Wrong collision for cactus blocks and water
- Reworked entities properties and behaviors
- Forest elevation to prevent too many lakes
- Optimization on collisions calculation
- Optimization on entity rendering