TODO.txt

- [EXAMPLES] Add better examples (e.g., Advent of Code snippets).
- [DOCS] Fix tests output in README.
- [DEV TOOLING] Make a pre-commit-hook which does not allow to push to master, if the tests are failing. Additionally, test whether the `docs/SIGNATURE.txt` is up-to-date or not.

# REPL
- Add support for step-debugging while loading a file (load single expression at a time).
  Provide user feedback and actions to perform (gdb kind of).
- Support auto-completion using readline.