Added methods:
- core.changeBlockByMaterial(Block, Material) // (Block) the block to change is material (Material) the material to change it to
- core.changeBlock(Block, String) // (Block) the block to change is material (String) the name of the material to change it to
- core.getType(Block) // (Block) the block to get its material
- core.getBlocksInRadius(Location, int, int, int) // (Location) the start location (int) the x radius (int) the y radius (int) the z radius
- core.freeze(Player, Long) // (Player) the playe to freeze (Long) the duration in ticks (20 = 1 second)