Simple functions showing information about business days in Poland.

isBusinessDay() - Returns True or False if the day is a business day

Examples
Default: isBusinessDay () or isBusinessDay (today)
isBusinessDay('2011-11-11')

lastBD() - Returns the last business day

Examples
Default: lastBD() or lastBD('today') - The last business day of today
lastBD('2011-11-11')

BDays_list(start_date, end_date) - returns a list with True and False values for a given range of days

Examples
BDays_list('2021-01-01', '2021-12-31')

