solving calendar.IllegalMonthError:

[av02]

solving a calender problem that made a 13nd month, and then an exception.

[doluk]

Good find!!
I think we can make it even better.
If I am not wrong, the if in line 357 will always be wrong, so we can remove that part and clean up the rest a bit. Init the month and year ifthey are none, then check for the new year problem while going to the next month and then call get_season_start.

Thank you for the pull request!

[av02]

I think you're right.
thank you for your work!

[majordoobie]

Could you post a snippet of the error you were getting please

[majordoobie]

Doluk clued me in. Thank you for your hard work :)