MagicKPvP

Added

• Player stats (kills, deaths, best kill streak) stored in a new magickpvp_stats table, with /magickpvp stats and /magickpvp top.
• Leaderboards for XP, kills, deaths and streak, cached and refreshed in the background (stats section in config.yml).
• PlaceholderAPI expansion (%magickpvp_...%) for XP, rank, stats, kit, cooldowns and leaderboards.
• Action bar cooldown display (cooldown-display in config.yml).
• Permission-based cooldown reduction (cooldown-reduction in config.yml).
• Optional kit unlock requirements (requirement in items.yml, kit-requirements.enabled in config.yml).
• Kit selector item (menu-item in config.yml) given on join and respawn, immovable, removed when a kit is selected.
• magickpvp.stats and magickpvp.top permissions, and PlaceholderAPI in softdepend.

Changed

• AbilityBehavior.activate and targetClicked now return whether the ability actually fired. A cooldown now only starts if the ability worked.
• Cooldowns are stored per player instead of per player and item pair, and KitManager.activeKit is now thread safe.