Introducing Holdings! Which so far only attempts to associate Spawnables with a Holding and then do stuff based on how many are attached to said holding.
- For each 10 normal GelCubes that come out of a single normal Portal (natural cap is 16 GelCubes) they'll nominate a queen who is also a Spawner :D
 - All Spawnables have a parent Spawner set (later can use to correctly cap mobs based on their exact origin Spawner)
- Temporarily comments out world spawning (easier to deal with counts purely from portals)
- Plenty of minor hacks/bugs still to fix