search syntax (exlusion = not something; due: day after tomorrow and on; due: split by day of week)

Hi!

1. Very often in our dashboards we require NOT syntax for the filter (say, due this week and NOT overdue).

2. "due:" filter would benefit from additional syntax like "due: today2 = tomorrow, today3=day after tomorrow and so on

3. finally we are trying to build a dashboard with Due Dates split by Day of Week (say Monday to Friday)- would be great to add this to the filter