Adds specs
Filters work packages by change time
Adds changelog entry
Adds scope specs
Moves changed since condition to scope
Updates scope condition definition
Simplifies parameter parsing
Makes scope non ambiguous
Merge remote-tracking branch 'origin/dev' into feature/detailed_filters_on_dates_3865
Merge pull request #852 from opf/feature/detailed_filters_on_dates_3865

[FEATURE] Detailed filters on dates 3865