Allow open releases to be grouped together in tabs on the Features board

We use releases for two primary purposes

• Weekly releases containing the general work that is in progress, meeting planning, etc.

• Project releases containing a set of features tied to a large project where we need to build a gantt chart

Currently, there is no great way to keep these releases organized together on the features board in a way that applies by default to all users who view the board.

It would be great to have the option to create release groups of active releases, organized within tabs on the features board. That way we could put our project releases on a separate tab from our weekly releases within the same workspace.