Now gets data from aoc website and uses as input.
Uses environment variables for session cookie, year, day and part.
See .envrc.example (copy to .envrc) and recommend direnv
❯ task -l
task: Available tasks for this project:
* day: Increment day
* default: Run Advent of Code (make sure to run get for the day)
* get: Get today's data
* part: Increment part