Spread BibLaTeX sets across multiple lines

Using BibLaTEX's `subentry` as in `\usepackage[backend=biber,subentry]{biblatex}` to bundle multiple references into one citation via `\defbibentryset{set1}{ref1,...,refn}`, how can I have each reference start on a new line within the corresponding entry in the list of references?

Just to be clear, I'm not looking for `block=par`, which adds line breaks even within individual references.

``````\renewcommand{\entrysetpunct}{\addperiod\par}