What kind of software is everyone using to keep track of all documentation related to release management.

Tools like JIRA, Service Now for Incident management, I'm looking for a software platform that will keep track of all related documentation, test plans, user sign offs etc... But what I have not been able to find and is critical for me is a Parent - Child, Child - Child relationship of all changes.

Such as:

CR12345 - is the parent record

  CR12345A - is a child record to CR12345

     CR12345A1 - is a child record of CR12345A

CR12345B is a child record to CR12345

Has anyone seen software that can support this?