Flowline

• First Flowline release for NeoForge 1.21.1 (Java 21, NeoForge 21.1.172 or newer), with the same features as the 1.20.1 build 0.3.29: item, fluid, energy, universal and (with Mekanism) chemical pipes, laid as blocks or as curved pipes; filters, the rule library and the Filter Card; distribution modes, priorities and redstone control; upgrades; dyeing; Build for me. Network protocol 14.

Differences from the 1.20.1 build:

• Mekanism 10.7 has a single chemical type, so the Chemical Pipe no longer treats gases, infuse types, pigments and slurries separately. Which chemical goes first can differ when a tank holds several, and a rule's chemical id is looked up in that one registry.
• A rule's data matches the stack's data components, not its NBT tag. NBT rules saved in 1.20.1 worlds do not carry over; every other rule kind does.
• Wrenches from other mods are recognised through the c:tools/wrench, c:wrenches and c:tools/wrenches tags.
• The config is the server config, <world>/serverconfig/flowline-server.toml.
• Existing 1.21.1 worlds from 0.1.x: old Configuration Cards become Filter Cards (their filter rules stay) and old facades vanish (each logs one "invalid item" error line on load).