What is your favourite day of the week? Check if it's the most frequent day of the week in the year.
You are given a year as integer (e. g. 2001). You should return the most frequent day(s) of the week in that year. The result has to be a list of days sorted by the order of days in week (e. g. ['Monday', 'Tuesday']). Week starts with Monday.
Input: Year as an int.
Output: The list of most frequent days sorted by the order of days in week (from Monday to Sunday).
most_frequent_days(2427) == ['Friday'] most_frequent_days(2185) == ['Saturday'] most_frequent_days(2860) == ['Thursday', 'Friday']
Preconditions: Year is between 1 and 9999. Week starts with Monday.