Fix newlines before/after “generated by…” footer
Fix newlines before/after “generated by…” footer

I used to concat lines with ‘\n’; when I changed it to Array.join(‘\n’),
I didn’t update the newline handling for the footer, which meant that
the footer was now on the same line as the last stack trace line.

lucaswerkmeister/linkStackTrace,lucaswerkmeister/linkStackTrace