Features:

• Fluidlogged API's config gui is now translucent while in a world. This will probably be added to all of my other mods as well!

Bug Fixes:

• Fix a possible crash (#243 (comment) & #257).
• Fix a possible FluidState.withLevel crash (#252).
• Fix fluid collision for "pseudo-fluid" blocks (#258).
• Redownload community configs if the internal versions.jsonc file got corrupted. This fixes a possible crash.
• Server-side fluidlogging configs are now always sent to connected players.
• While "nonSourceFluidlogging" was disabled, source fluid blocks could be created with non-source fluid blocks, by flowing into a fluidloggable block with other non-source fluids on two different sides. Now adjacent source blocks are required for this behavior once again, like in v2.x.x (#249).

Compatibility Fixes:

• Chisels and Bits:
  • Allow chiseled bits to be placed inside replaceable blocks.
  • Fix chiseled blocks voiding fluids on placement.
  • Fix fluid collision for chiseled blocks (#248).
• Galacticraft:
  • Fix crash with old Galacticraft (non-legacy) versions (#255).
• Industrial Foregoing:
  • Fluidlogged pink slime fluid no longer removes the block when spawning a pink slime entity (it only removes the fluid now).
  • The fluid pump now (actually) accounts for FluidStates.
  • The resource fisher now accounts for FluidStates.
  • The water collector now accounts for FluidStates.
• Optifine:
  • Fluids now render consistently while Optifine's "Render Regions" setting is enabled (#190 & #260).
• PneumaticCraft:
  • Allow Empty PCBs to be filled using FluidStates.
• Random Things:
  • Fix wireless redstone (#253).
• Ruins:
  • Forcibly prevent Ruins structures from being able to contain old FluidStates (#254).
• Thermal Expansion:
  • The Aquatic Entangler now accounts for FluidStates.
  • The Aqueous Accumulator now accounts for FluidStates.

API Changes:

• ...mod.common.message.SMessageSyncRuntimeConfigs has been renamed to ...mod.common.message.SMessageSyncConfigs. This is an internal class, so it shouldn't affect any mods.
• New interface: ...api.message.IServerMessageHandler. Functions as a server-side counterpart to IClientMessageHandler.
• New method: ...api.message.IClientMessageHandler.isCtxValid(REQ, MessageContext).
• New method: ...api.message.MessageUtils.readJson(ByteBuf). Utility method that reads a JsonElement with UTF8 byte encoding from the buffer.
• New method: ...api.message.MessageUtils.writeJson(ByteBuf, JsonElement). Utility method that writes a JsonElement with UTF8 byte encoding to the buffer.
• New method: ...api.util.FluidloggedUtils.positionDripParticle(World, BlockPos, FluidState). Utility method that returns the position to spawn a drip particle, or empty if one cannot be spawned.
• Split ToFluidloggedDataFixer functionality from the legacy data fixer. This change allows for separate versioning between them, and allows other mods besides Fluidlogged API to increment the ToFluidloggedDataFixer version (other mods increment it automatically when adding a new IFluidloggedDataMapper).