Improvements for Code Character 2019

• Allow runtime error debugging. Possible implementation: have a separate debug run, or always run test code in debug mode. Show stack trace after core is dumped.
• Add version control. Possible implementation: Add explicit commit button. Show history, allow checkout to any commit, allow a revert commit to revert the effects of a previous commit.
• Enable play against different commit versions of your AI, and allow multiple versions to simultaneously exist (in separate tabs?) without committing and allow play against these versions too.
• Enable simple cross-platform setup for desktop version of simulator.
• Separate state syncer and command giver for much cleaner tests.
• Make Code Character Coin.
• Add tests for web app and clean up webapp code.
• Add neat way to send global notifications that actually get seen by everyone.
• Make a proper forum where people get notifications when there's activity (by email, say).
• Have proper communication about prize money and deadline right from the start.
• Fix zombie processes. Find a better alternative to using Boost Process. Push the runtime error detection code to a separate module so that it can be tested.