* Fixes#4743.
* Resolves an issue with power skills and default data defined in the skill's array.
* Adds back linear determination and documentation for it.
* Adds a check in the converter to not print out values of 0 for levels 6 and higher for skill unit layout and skill unit range.
* Removes these values from the skill database.
Thanks to @Surefirer and @teededung!
* Fixes#4707.
* Follow up to ea8da71.
* Skill now applies long range damage.
* Skill now does 3 hits.
* Target's placement in the AoE does not affect damage; it's all the same for each target.
* Updates strength bonus.
* Reverts Mercenary Brandish Spear to pre-renewal effects.
Thanks to @violent01 and @mrjnumber1!
* Initial implementation of these two classes skills.
* Includes kRO balancing patch: http://ro.gnjoy.com/news/devnote/View.asp?category=1&seq=3921697
Thanks to @Rytech2, @Mateuus, @nubspixel, @exneval, @idamonli, @hotspicy945, @admkakaroto, @cahya1992 and @RagnaWay!
* Fixes#4702.
* Skill no longer ignores the target's flee.
* Skill now deals 2 hit when using dagger instead of doubling the damage.
Thanks to @yashimwong!
* Fixes an issue with knockback converting the wrong column.
* Fixes an issue with skills containing multiple elements converting the wrong column.
Thanks to @mazvi and @Lemongrass3110!
* Fixes#4589.
* Resolves an issue with the skill converter outputting the incorrect ammo type requirement.
* Also fixes an issue with physically attacking targets while having a status option active.
Thanks to @mazvi!
* 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>
