0.5.1 - Minor bug fixes and adjustements

Bug Fixes

• Fixed a bug where archer didn't gain any mana from his weapon
• Fixed a bug that prevented clearing first map after defeating the main boss

Minor Adjustments

• Archer class changes:
  • Atk spd slightly increased (now base stat is similar to other chars)
  • Ability projectile spd multiplier slightly toned down
• Neo Dungeon: red neo knights and red neo gunners spawn rate slightly decreased