issue #21 - ScheduledTransaction - add better validation of day_of_month; add recurrence_str and schedule_type hybrid properties
issue #21 - ScheduledTransaction - add better validation of day_of_month; add recurrence_str and schedule_type hybrid properties

jantman/biweeklybudget,jantman/biweeklybudget,jantman/biweeklybudget,jantman/biweeklybudget