Changing changeling (Refactor) (#17749)

* Begin antag component

* Initial changeling move

* Slow...And...Steady...

* Initial

* remove  toworld testing

* More adjustments

* Update absorb.dm

Changelings get a genetic point per person absorbed

* Fixes losing your markings

* wa

* Update modularchangling.dm

* BETTER LING

WITH TGUI

* Gives all stings a global 1 second cd

Need to come up with a better way for this.

* snake_case

* Update epinephrine_overdose.dm

* Update changeling.dm

* Absorption/digestion absorbs people

Also disabled death sting because gtfo with that, it's unfun for everyone involved.

* prey ling

also DELETES death sting...It didn't even KILL properly

* fixes EMP shriek

* Update vorestation.dme

* Ling

* Unfat sting lowers nutrition more

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* Changeling blades NOT embed

* Armblade fix

* Changeling spacesuit free

* Updates the armor

* Updates

* awa

* More

* Update blind_sting.dm

* Update blind_sting.dm

* Update boost_range.dm

* More adjustments

* Update _reagents.dm

* Update bioelectrogenesis.dm

* more

* all done

* awa

* shhh

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* decon

* gets rid of AB+ blood

* Blood rejection and better checks

* changeling holder

* proper del

* Changeling lock

* Stops bodytheft

* yeah

* its reviving time

* Lets them shapeshift

* ah

* check

* Update negative.dm

* Update examine.dm

code/modules/organs/blood.dm

@@ -364,9 +364,10 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		if(!our)
 			log_debug("Failed to re-initialize blood datums on [src]!")
 			return
-
-
-	if(blood_incompatible(injected.data["blood_type"],our.data["blood_type"],injected.data["species"],our.data["species"]) )
+	if(is_changeling(src)) //Changelings don't reject blood!
+		vessel.add_reagent(REAGENT_ID_BLOOD, amount, injected.data)
+		vessel.update_total()
+	else if(blood_incompatible(injected.data["blood_type"],our.data["blood_type"],injected.data["species"],our.data["species"]) )
 		reagents.add_reagent(REAGENT_ID_TOXIN,amount * 0.5)
 		reagents.update_total()
 	else