First Class Flying 1.2.0 Changelog

Release Packaging And Compatibility

• Preserved mod version 1.2.0.
• Added explicit jar names and compatibility lines for supported Minecraft releases.
• Corrected build and dependency metadata used by the release artifacts.
• Prepared the runtime-tested release matrix as nine artifacts.
• Split previously unsafe ranges after Fabric API dependency mismatches caused startup rejection.
• Isolated Minecraft 1.21.4, 1.21.8, 1.21.9, 1.21.10, and 1.21.11.
• Kept Minecraft 1.21-1.21.1 as a shared jar.
• Kept Minecraft 1.21.2-1.21.3 as a shared jar.
• Kept Minecraft 1.21.5-1.21.7 as a shared jar.
• Kept Minecraft 26.1-26.1.2 as a shared release artifact after validation.

1.2.0 Highlights

• FCF stays dormant on servers that do not have the mod installed.
• FCF servers can reject clients that do not advertise the required FCF client channel.
• Added configurable Powered Flight and Vanilla Glide keybind behavior.
• Added conservative server-side Elytra/Chestplate Swap behavior.
• Improved wing visuals during true vanilla elytra glide handoffs.

Known Technical Decisions

• The old broad range 1.21.2-1.21.4 was split because metadata built with the 1.21.4 Fabric API requirement blocked the 1.21.2 runtime.
• The old broad range 1.21.5-1.21.8 was split because metadata built with the 1.21.8 Fabric API requirement blocked the 1.21.5 runtime.
• The old broad range 1.21.9-1.21.10 was split because metadata built with the 1.21.10 Fabric API requirement blocked the 1.21.9 runtime.
• These are compatibility metadata corrections. They do not assign fault to Fabric, Fabric API, or Minecraft.
• The 26.1 artifact is built against 26.1.2 and declares the project-approved 26.1.x metadata range >=26.1 <26.2.