More precisely, it now splits the full 'filename' into 'name' and 'id'
instead of overwriting 'filename'. The format string stays the same as
before. Use '{name}.{extension}' to restore the old behavior.
before:
- filename: foobar
- id : 12345
now:
- filename: foobar-12345
- name : foobar
- id : 12345