* Implement the favourite filter
* Make the room node capable of dealing with filters
- Holds data to indicate which filters apply
- Provides method to check if a given set of filters apply to this node
- Provides a method to recalculate which filters apply
* Wire up the filtering mechanism in skip list
* Use filters in the store
* Remove else
* Use a set instead of map
R Midhun Suresh
7ff1fd259d