Additional options added to FrequencyTypeEnum: EveryWeekDay, EveryMonWedFri and EveryTuTh 

Additional options added to FrequencyTypeEnum

        EveryWeekDay = 32, // Every weekday (Monday to Friday)
        EveryMonWedFri = 64, // Every Monday, Wednesday and Friday
        EveryTuTh = 128 // Every Tuesday and Thursday

Test cases for these options have also been added.