SpecialDay Date Range support

[MartyX98]

Hi! It would be useful if we could insert Special days that span more than one day. Many holidays or events are longer than one day and there are several reasons why it would be benefitial feature;.

1. It would radically simplify the creation of Special days that span more than one day by not having to create Special day for each day of that range separately.
2. It wouldn't clutter the Special days list page when creating new calendar.
3. After creation of the PDF, the user will have a better overview of current events when actually using the calendar.

So instead of current event/holiday creation prompt;
[Event OR Holiday] [mm/dd/yyyy] [description of Special day]
I propose it could look something like this;
[Event OR Holiday] [Single day OR Range] [mm/dd/yyyy OR from mm/dd/yyyy to mm/dd/yyyy] [description of Special day]

edits: typos.

[MartyX98]

I would also like to say a huge Thank you for this project overall. I just discovered it and cannot wait to start using it with my RM2. I bought it to ease my note taking at Uni and this calendar system is everything I needed at last. Thank you again!