0.10.0

Spell Hotbar can be controlled via Keybindings!

• Multiple hotkey behaviors available (hold to cast, press to cast), configurable for different casting mechanics separately
• Custom hotkeys can be assigned
• Vanilla hotkeys (such as use key, item hotbar keys) can be used, when no custom hotkeys are assigned
• Switching between item and spell hotbar is no longer needed, nor possible
• Spell Hotbar keybind is rendered on HUD

Other changes:

• Spell Haste effects spell casting animation playback speed
• Spell data files can now specify if Spell Haste should affect cooldown and casting speed
• Internal refactor for the entire spell casting mechanism
• Spell casting no longer stutters when quick switching between spells
• Optimise spell projectile sync payload
• Fix server config player_relations being reset on every launch