Mega Serval version 2.3

I've added two new settings to Mega Serval! You can now enable auto-fire and disable knock-back. Please be advised that like with other difficulty settings, knockback will be required to submit times to the leaderboard.

Version 2.3 - May 10, 2023:

• Added new settings:
  • Auto-fire: Serval can continuously fire by holding the attack buttons.
  • Knockback: stun & knock-back can be disabled.

• Serval is no longer pushed by wind during her stun animation.
• Added 10-frame cool down after splitting DARK MAGIC to facilitate auto-fire.