Firmament 1.9.0

Full Changelog: 1.8.0...1.9.0

• Fix crash when copying entity data
• Remove client side left hand patch
• Add pet upgrade cost recipes
• Add custom head models
• Add always open storage overlay option
• No longer block you from taking out items from the salvage menu
• Fix incompatibility with dulkirs skin signature patch
• Fix waypoints rendering inverted
• Fix some textures not being loaded due to misaligned base64 data
• Add essence upgrade recipes
• Fix exception during packet handling
• Add support for /give syntax to /firm buttons