add purge recipe (apple+grape+chili)

scripts/SpellLibrary.gd

@@ -10,6 +10,7 @@ const FIREBALL   = "FIREBALL"
 const FIRE_SWIRL = "FIRE_SWIRL"
 const TORNADO    = "TORNADO"
 const LASER      = "LASER"
+const PURGE      = "PURGE"
 
 var recipes: Dictionary = {
 	FIREBALL:   [APPLE],
@@ -17,6 +18,7 @@ var recipes: Dictionary = {
 	LASER:      [CHILI],
 	SHURIKEN:   [APPLE, GRAPE],
 	FIRE_SWIRL: [APPLE, CHILI],
+	PURGE:      [APPLE, GRAPE, CHILI],
 }
 
 func identify(cauldron_slots: Array) -> String: