$ composer install

$ php adventofcode.php <advent day keyword>

Current days available
- Day 1:  stair_climber          (php adventofcode.php stair_climber)
- Day 2:  wrapping_needs         (php adventofcode.php wrapping_needs)
- Day 3:  santa_deliveries       (php adventofcode.php santa_deliveries)
- Day 4:  coin_mining            (php adventofcode.php coin_mining)         *SLOW*
- Day 5:  naughty_nice_list      (php adventofcode.php naughty_nice_list)
- Day 6:  lights_alive           (php adventofcode.php lights_alive)        *VERY SLOW*
- Day 9:  trip_adviser           (php adventofcode.php trip_adviser)
- Day 10: look_and_say           (php adventofcode.php look_and_say)
- Day 11: stantas_password       (php adventofcode.php stantas_password)
- Day 12: elf_accounting         (php adventofcode.php elf_accounting)
- Day 13: knights_table          (php adventofcode.php knights_table)
- Day 14: reindeer_olympics      (php adventofcode.php reindeer_olympics)
- Day 15: cookie_recipe          (php adventofcode.php cookie_recipe)
- Day 16: aunt_sue               (php adventofcode.php aunt_sue)
- Day 18: yard_gif               (php adventofcode.php yard_gif)
- Day 19: reindeer_medicine      (php adventofcode.php reindeer_medicine)
- Day 20: infinite_elves         (php adventofcode.php infinite_elves)      *SLOW*
- Day 21: christmas_rpg          (php adventofcode.php christmas_rpg)
- Day 22: wizard_simulator       (php adventofcode.php wizard_simulator)
- Day 23: turing_lock            (php adventofcode.php turing_lock)