More workflow options for date properties
We don't always want to "hold" a contact in a workflow in order to set a date property for a number of days in the future. Sometimes we want to change a date property that's been set in the past. It'd be great if we had more workflow actions available to choose from:
1) Set a date property based on a rolling date (i.e. 6 weeks in the future, 2 weeks ago, etc.)
2) Add/subtract time from a date property. For example, increase a date by 2 weeks. This isn't the same as option #1, in cases where the date property is already set for a time in the future.