2024 23: add C solutions

2024: add a TODO for remaining C programs

2024: be more permissive of missing files in timer.py

2024 22: add p2.c

2024 25: Merry Christmas!

2024 21: add python solutions

2024 24: add python solutions

2024 18: remove old comments

2024 20: add solutions

2024 22: add C/Python solutions

2024 23: add python solutions

2024: allow blank stdout on timer.py

2024 19: add solutions

2024 18: add solutions

2024: add perf out to gitignore

2024 16: add python solutions

2024 17: add solutions for day 17

2024 15: misc minor cleanups

2024 15: add solutions

2024 14: add Neil Thistlethwaite clarification + video link