Holograms

What's Changed

• Add player head support to item hologram lines by @NonSwag in https://github.com/TheNextLvl-net/holograms/pull/136
• Improve skull item height and offset calculations by @NonSwag in https://github.com/TheNextLvl-net/holograms/pull/137
• Allow nesting of <player> and <hologram> tags in text hologram lines

Full Changelog: https://github.com/TheNextLvl-net/holograms/compare/0.10.0...0.11.0