Fluidlogged API

Features:

• Add Modrinth updateJSON url.
• Minor performance improvements.

Bug Fixes:

• Fix concurrency issue with FluidFlowHandler::getFlowVec (fixes #275 and #283).
• Fix crash with Java 9+ (fixes #284) (this bug only affected v3.1.3 of Fluidlogged API).
• Fix minor inconsistency with normal fluid flow logic.

Compatibility Fixes:

• Gauges and Switches:
  • Fix blocks not emitting a redstone signal (fixes #282).
• Schematica:
  • Fix crash when rendering schematica with fluids (fixes #279).

API Changes:

• New method: ...api.util.IFluidloggable.canFluidConnect(IBlockAccess, BlockPos, IBlockState, EnumFacing).
• New method: ...api.util.FluidloggedUtils.canFluidConnect(IBlockAccess, BlockPos, IBlockState, EnumFacing).
• Restore FluidloggedUtils methods that were accidentally removed in v3.0.0.