Fixed some oddities with other player clients when dealing with summons
(spawning, taking damage or attacking). Fixed damage dealt to player not
apearing if the player is a GM on hiding and other players in the area
are GMs as well.
Added a queue system for waiting guilds outside the GPQ area. Changed
the way players are transported through maps on non-portal passing
cases: if not defined, a spawn point is chosen randomly for each player.
Fixed a bug on guild creation process where the leadership would not be
assigned instantly to the guild leader (would need to change channels or
reconnect to take effect).
Added the PIN feature. Fixed ranking now calculating ranks now
world-based instead of overall. Rebalanced equip exp gain and made
cosmetic equipments no more leveling up (cosmetics leveling up are
useless).
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).
