Link a specific version of a requirement or test case to a Release

When associating a requirement to a Release (Release A), keep track of the version of the requirement and test cases that relate to this. 

If in further releases (Release B) a requirement or a test case changes, the Release B will be associated to the new version of the Requirement and/or Test Case, but Release A will not be affected by that.

Optionally, offer through a dialog if any of the linked (and still active) releases needs to be updated or not to link to the new Req/TC version