Added antibanish mechanics: as like other "diseases" that can be treated
with some useable items, banish will be able to be recovered as well.
Fixed some SQL issues introduced on the last commit, as well as
lingering inexistent ids on drop data. Fixed some concurrency issues
with MapleMapFactory. Set a ceiling for simultaneous items available per
map, where old ones are promptly discarded. Patched MWLB attack block
for higher level GMs.
Fixed some bugs regarding dojo, updated drop data, minor tweaks on
Mystic Doors, added expeditions for Showa Manor, Zakum and Pink Bean,
smart search for item slots on quest/npc rewarding system, attempt on
boss HPbar to focus on player's current target, quests with selectable
rewards now hands the item correctly, after the first PQ instance next
ones are loaded more smoothly.
Reworked many aspects of the Malaysia/Singapore region (added DB data,
enabled Latanica & Scarga expedition, fixed maps). Fixed some issues
related with player warping.
Implemented Guild PQ. Fixed a problem introduced earlier where negative
EXP would be deemed as "integer overflow", provoking many game breaking
issues as result.
Added mechanics for the EXP/DROP cash coupons (such as enabling
out-of-time active coupons via command and automatic update of active
ones over the designed interval). Created MapleCouponInstaller as means
to gather info about the coupon intervals and rates from the WZs (the
generated SQL table is already updated on the db_database.sql file).
