General

• Do not include forge/fabric mod manifest in the other version's jar
• Stop using deprecated methods
• Preprocessor should cleanly transform between all of them
• Check that I didn't horribly break 1.12.2 in the process
• Test multiplayer
• Marking chunks for rebuild in response to receiving neighboring chunks doesn't seem to work
  properly
• Block collision hooks
• Maybe split mod into one child mod per portal type (would solve the early loading issue in the forge section, since one can then just un-install the submod instead of disabling it in the config)
• Rewinding world changes on teleport is broken (integration tests failing and manual testing seems to confirm it)
• EntityTraversalRenderTests are failing, manual tests seem fine though

Forge

• Check that I didn't break Forge 1.14 while porting to Fabric 1.14 (for workarounds to run in dev env see 803df56)
• Figure out how much (if anything) of the network handshake we need to simulate for views on server and client
• Test end portal
• Implement enhanced third-party transfers (entity placement)
• Either config file needs to be loaded early or we need a way to dynamically enable/disable registry overwrites? → Split mod into multiple modules. So not installing some part of it is an option (would be better with jar-in-jar but that's currently broken in 1.14 forge).
• Get integration tests running again
• Runs outside of development environment (for workarounds, see 803df56, proper release blocked on MinecraftForge/MinecraftForge#6557): currently causes stackoverflow in func_223438_b; haven't tried dev env in a while, so might happen there as well
• Dedicated server? (partially blocked on running outside of dev env)
• Optifine? (blocked on running outside of dev env)

Fabric

• Test end portal
• FOV hook
• Hooks to make sure the view-camera is never considered to be inside a block/fluid (all handily redirected to ActiveRenderInfo.getBlockAtCamera by forge) → we already handle fluids and block handling is not actually required: the forge method isn't actually called anywhere, vanilla uses Entity.isInsideWall(), etc
• Block outline hook
• Implement enhanced third-party transfers (entity placement and render hook)
• Support fabric-dimensions-v1 (EntityPlacer) in enhanced third-party transfers
• What to do about the NoSuchMethodError in JsonGlProgram mixin? (probably workaround until fabricloader upgrades to Mixin 0.8)
• What to do about the channelRead0 thing? → fixed by updating yarn
• Figure out better workaround for the fact that fabric only supports singe-directory resource packs (we have multiple source sets) → we now have one mod per source set (except only one for main+api but that seems fine)
• Get integration tests running again
• Runs outside of development environment
• Entities in the destination world sometimes flicker when the player (not the camera!) switches worlds (might be a 1.14 thing, only tested fabric)
• Dedicated server?
• Optifine? (via Optifabric)