v0.8.4

• Add support for time-less dates

  When a property that transforms Date values is set with VALUE=DATE, the time is not included when generating the ICS data.

  Example:

  const event = new ICS.VEVENT();
  
  // VALUE=DATE
  event.addProp('DTSTAMP', new Date('1991-07-11'), { VALUE: 'DATE' });
  
  // VALUE=DATE-TIME
  event.addProp('DTSTART', new Date('1991-07-11 10:00:00'), { VALUE: 'DATE-TIME' });
  
  // Without props (DATE-TIME is the default)
  event.addProp('DTEND', new Date('1991-07-11 22:00:00'));
  
  // Non-Date values are passed without transformations
  event.addProp('RDATE', '19910711T190000');

  Return value of event.toString():

  VBEGIN:VEVENT
  DTSTAMP:19910711
  DTSTART:19910711T100000
  DTEND:19910711T220000
  RDATE:19910711T190000
  VEND:VEVENT