The fiscal years are created centered on the passed date such that if the current day change during the execution, the fiscal year is still usable. Also fiscal year can be created for a range of dates such that it is guarantee that the dates are in the fiscal year. And finally remove datetime and dateutil import when they are not used. Closes #9977
Account Dunning Letter Module ############################# The account_dunning_letter module generates a dunning letter after the process of dunnings for those who are at a level with *Print on Letter* checked.