* POLARIS: Do this lazily
* POLARIS: Speed up visible_message and audible_message
* POLARIS: Destroy this list rather than cutting it, for future safety
* POLARIS: Simplify Destroy on plane_master
If we're being Destroyed, the mob probably is too. Their job to remove references to us though.
* POLARIS: What if I want to wear a mouse on my head
* POLARIS: Lighting runtime for accessing a list that might not exist
* POLARIS: Lazily clear these lists
* POLARIS: Just return the normal hint in Destroy on plane holders
* Polaris initial plane upstream merge
* POLARIS: Fix RIG visors with new plane system, and material scanner VIS_FULLBRIGHT
* POLARIS: Fix GetFlatIcon so that cameras and id pictures don't show the HUD overlays.
* POLARIS: Adds a 'alter values' proc for plane master ease of tweaking
Setting stuff like colorblindness variety and things.
* Remove NIF reference, fix lighting layer define
* Handle effects above lighting plane
* Moved all layer defines to planes+layers.dm
* Fixed overlays that are supposed to be above lighting to use the PLANE_LIGHTING_ABOVE
* Merge: 3000% human/update_icons() speed improvement
* Merge: Avoid ghosts pointing at things
