User.get_stats() throws an error if no stars have been collected for a year

[jokajak]

The source of the https://adventofcode.com/{year}/leaderboard/self does not include an article tag which causes an exception:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/jokajak/.cache/pypoetry/virtualenvs/aoc-coTrba3t-py3.10/lib/python3.10/site-packages/aocd/models.py", line 113, in get_stats
    if soup.article.pre is None and "overall leaderboard" in soup.article.text:
AttributeError: 'NoneType' object has no attribute 'pre'

[wimglenn]

@jokajak Fixed in 1.2.1. Thanks for the report!