Makes void cloak space proof (Kinda) (#3639)

* Gives void cloak STOPPRESSURE damage flag

* Update research to reflect new abilities

code/modules/antagonists/heretic/items/heretic_armor.dm

@@ -57,6 +57,7 @@
 	flags_inv = NONE
 	flags_cover = NONE
 	item_flags = EXAMINE_SKIP
+	clothing_flags = STOPSPRESSUREDAMAGE
 	armor_type = /datum/armor/cult_hoodie_void
 
 /datum/armor/cult_hoodie_void
@@ -80,6 +81,7 @@
 	allowed = list(/obj/item/melee/sickly_blade)
 	hoodtype = /obj/item/clothing/head/hooded/cult_hoodie/void
 	flags_inv = NONE
+	clothing_flags = STOPSPRESSUREDAMAGE
 	body_parts_covered = CHEST|GROIN|ARMS
 	// slightly worse than normal cult robes
 	armor_type = /datum/armor/cultrobes_void

code/modules/antagonists/heretic/knowledge/side_flesh_void.dm

@@ -4,7 +4,7 @@
 	name = "Void Cloak"
 	desc = "Allows you to transmute a glass shard, a bedsheet, and any outer clothing item (such as armor or a suit jacket) \
 		to create a Void Cloak. While the hood is down, the cloak functions as a focus, \
-		and while the hood is up, the cloak is completely invisible. It also provide decent armor and \
+		and while the hood is up, the cloak is completely invisible and gives pressure resistance. It also provide decent armor and \
 		has pockets which can hold one of your blades, various ritual components (such as organs), and small heretical trinkets."
 	gain_text = "The Owl is the keeper of things that are not quite in practice, but in theory are. Many things are."
 	next_knowledge = list(