Reactor drops & Looting & Mob HP overhaul + TreasurePQ

Modified coupon rates buff icon to not show up as expirable.
Reactor drops now also drops quest items at the border of the dropped items.
Added themed drop data for the Cake boss.
Reworked the Balrog expedition.
Added quest script for the Assassinate skill.
Fixed looting system blocking the killer's party from retrieving a loot until the FFA timeout.
Fixed a deadlock with the MapleMap class.
Refactored damage/heal contabilization on mobs.
Fixed issues with HT and status-based damage, providing weird issues with mob HP.
New PQ: TreasurePQ, for level 140+.

docs/feature_list.md

@@ -22,13 +22,12 @@ Feature list:
 
 PQs:
 
-* HPQ/KPQ/LPQ/LMPQ/OPQ/EllinPQ/PiratePQ/MagatiaPQ/HorntailPQ/AmoriaPQ.
+* HPQ/KPQ/LPQ/LMPQ/OPQ/EllinPQ/PiratePQ/MagatiaPQ/HorntailPQ/AmoriaPQ/TreasurePQ.
 * CWKPQ as Expedition-based event.
-* Expeditions: Scarga/Horntail/Showa/Zakum/Pinkbean.
+* Expeditions: Scarga/Horntail/Showa/Balrog/Zakum/Pinkbean.
 * GuildPQ 100% + Guild queue with multi-lobby systems available.
 * Brand-new PQs: BossRushPQ, CafePQ.
 * Mu Lung Dojo.
-* BalrogPQ semi-functional.
 * Capt. Latanica remade as an event (parties can now fight the boss).
 
 Skills:
@@ -76,6 +75,7 @@ Monsters, Maps & Reactors:
 * PQs, Taxis and other event-driven situations warps players at random spawnpoints, GMS-like.
 * Some reactors (PQ bonus boxes) now sprays items on the map, instead of dropping everything at once.
 * Updated Crimsonwood, World Tour, Nihal Desert and Neo City, enabling quest completion and game progression in these areas.
+* Giant Cake (anniversary-themed boss) drops Maple equipments, Maple scrolls, summoning bags and many more interesting items.
 
 PQ potentials: