Current situation

There is no easy way to see who changed what and when in a sprint. 

Desired situation

There should be an activity stream for a sprint. Where I am able to browse everything that was changed to a sprint since it was started. All status changes, new issues being added. Just like the profile activity stream, except that it is limited to all the activities that happen in the sprint.

Perhaps a lot of the functionality of the profile stream could be reused, except it should be filtered by sprint.