>> advent ./bin/advent -h
advent [-h/--help] <command>
Advent of Code meets "The Kringle 3000".
[-h/--help] Print out help information.
<command> Only ["run", Advent::Command::Run].
run [-p/--part <n>] [-y/--year <n>] [-t/--test] [-e/--example] <day>
Run the specified challenge.
[-p/--part <n>] Just run <n> part of the day's challenge.
[-y/--year <n>] Run day in alternate year (defaults to 2021).
[-t/--test] Run the tests for the specified challenge and/or part.
[-e/--example] Run the tests for the specified challenge and/or part.
<day> Run this day.