An optional footer section of a PhoenixPaper.Table (pp_table_footer/1)
— renders a <tfoot> of PhoenixPaper.TableRows, typically for totals or
summary values. See PhoenixPaper.Table's moduledoc for a full example.
Like PhoenixPaper.TableHead, the separating border lives on every
descendant cell rather than on the <tfoot> element itself, for the same
cross-browser reason.
Summary
Functions
Renders a table footer. See the module doc.