ZuriHac 2020 project ideas

[nh2]

• Pick one of tasks from our general TODO list in the README (some of them have corresponding issues already, in such a case please assign the one you take to yourself)
• Implement any syscall you like
• Implement one of the syscalls that we have pre-selected and rated by difficulty in the gist. Check out our guide for the details how to do this.
• Solve some real-world issues with hatrace and write about them
• Last year, zappy made a PR (wip: Import all remaining syscalls #38) that code-generates many useful things, but GHC gets extremely slow on it. Simplifiy it into a single, standalone file not depending on hatrace to turn it into a GHC upstream bug report about this slowness.