MagicSpells Beta 8 Changelog

### Additions
- 1.16.4 Support
- hasspell modifier which passes if the target(player) has the specified spell.
- Readded max-variable section to the boss bar effect. Allows you to define a variable as the max value for a boss bar.
- Random cooldowns with defined range:
  * To define a random cooldown you simply set the range: cooldown: <number>-<number>
  * To use float precision cooldowns (numbers like 2.5, 3.43...) set use-precision-cooldowns to true

### Changes
- BeamSpell, BlockBeamSpell, ItemProjectileSpell, ProjectileSpell, ParticleProjectileSpell, HomingMissileSpell, HomingProjectileSpell will now stop once entering a no-magic zone.