Trails and Tails and Geodes

• Updated to 1.20.1
• Use a new echo display entity to highlight crystals with the Echo Locator
• Internally renamed the emerald/quartz/diamond geode blocks to emerald/quartz/diamond crystal blocks
• Removed echo locator variants
• These block removals and id changes should not affect old worlds. Generally speaking, worlds in this update will be backwards compatible with 1.7