When navigating between source and/or test files (for instance through coverage per test or duplications - and later any reference inside and across any file), the workspace must keep track of:
- the files that were visited
- the transitions that led to this navigation
We must make sure that when looking at this workspace bar, it is obvious which path we followed to go from the first file to the last one listed in this bar.
We must also find a way to easily show/hide this bar.