Raycasted Entity Occlusions

Added two new config options: OccludePlayers and MoreChecks. Both default to false. if OccludePlayers is set to true, players behind blocks will be occluded. This however removes them from tab list. MoreChecks quadruples the number of raycasts per entity, making them visible even if only a sliver of the entity is. This is very performance intensive, use at your own risk.