Fixed Neo City area, now playable.
Overhauled the EllinPQ mechanics, such as the "CLEAR" effect when passing maps, and some bug fixes along the way.
Refactored a lot of out-of-place classes and properly renamed a few others through the project.
Updated readme and licenses through the source, preparing the stage for the new release.
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.
