Add a column to the personal stats page which displays how long it took you to get from part 1 to part 2
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
This inserts a new column on the personal stats page: https://adventofcode.com/<year>/self
With version 0.0.3, this extension will also attempt to track the first time you open a puzzle and offset your completion times based off of that start time.
Note: You must generate a private leaderboard in order for the extension to work. See: https://adventofcode.com/<year>/leaderboard/private