Head slugs can now vent crawl (they're so tiny why didn't they already have this?)
Head slugs can stumble around for 10 seconds after they lay their egg so they don't die super obviously right next to their infected corpse
This functions the same way as editing the ckey in vv, and has the same permission checks
It requires the admin also be a ghost to avoid conflicts with other drag drop code.
Fixes#8919 - can pixel_x/pixel_y is inherited by the IED after construction
Fixes an unreported issue where the can underlay of IED's would be rendered underneath your HUD when it was in your hands.
Lighting SS no longer cares about the return of check(); the light datums are responsible for deleting themselves.
Cap on lighting effects from turfs is now 8 because they're static and shouldn't be flashing lights too often. This means starlight actually works now instead of being capped at 1 measly turf.
Lighting related ChangeTurf() code is in the lighting module. Changed it up to be faster on lighting controller init and not leave dangling lights when a turf becomes or stops being opaque or when it turns into space. This diff log is gonna be useless sadly but take my word for it, it all works.
Lighting related Moved() code is also in the lighting module. Opaque objects will now update nearby lights when they move (mechs).
Opaque objects other than the light datum's owner on the same tile as its owner will block the effect of the light. In other words a mech standing on the same square as a light bulb will block all the light of that bulb.
Changed "cheap_hypoteneuse()" with an even cheaper version; actually calculating the hypoteneuse! I can prove it's cheaper if needed.
Removed move_contents_to() because it's unused and trying to use it would cause major bugs with lights and other shit and I have no interest in supporting that, so let's not even tempt people.
Remove alloweat var from masks, remove MASKCOVERSMOUTH flag from mime and clown masks so you can still eat through them.
Some adjustments in surgery checks for bodyparts covered.
Fixes a runtime in weapon/energy attack_verb.
Humans can now CPR monkeys.
Slight changes to CPR code.
Fixes runtime with drones trying to do CPR.
Rewrites /obj/item/weapon/reagent_containers/proc/canconsume to be less shitty.
Adds an is_mouth_covered() proc to carbons to check for mask and headgear with MASKCOVERSMOUTH or HEADCOVERSMOUTH, with argument to restrict the check to only mask or only head.
