Copy pdb files for the release build, too

I would like to distribute PDB files with the release build to have an exception line of code in error logs. Development build copies PDB files (e.g. `Assembly-CSharp.pdb`), but the release build always deletes them. When I use the check box `Copy PDB`, then only the `UnityPlayer*.pdb, WindowsPlayer*.pdb` are copied, but not the PDB of my source code, which is of my main interest. How to add all PDB to the release build?