* Combines skill_cast_db, skill_castnodex_db, skill_copyable_db, skill_nonearnpc_db, skill_require_db, and skill_unit_db into skill_db.
* Introduces a cached YAML class for quicker lookups.
* General cleanups and optimizations.
* Includes CSV2YAML conversion tool.
Thanks to @Lemongrass3110!
Co-authored-by: Lemongrass3110 <lemongrass@kstp.at>
* Alphabetically sorted includes.
* Updated copyright and license text to match across all files.
* Removed pragma once define in header files in lieu of ifdef guards.
* Initial progression of moving the map-server to C++ format.
* Converted all core files to .cpp and header files to .hpp.
* Refactored the refine database parser to utilize native YAML C++.
Thanks to @Jeybla and @lighta for their help!