Bandcamp: Show publish date

Shows Bandcamp releases' real "publish date" below the listed release date. Also shows "date modified" if different from publish date.

ئاپتورى
w-biggs
بۈگۈن قاچىلانغىنى
1
جەمئىي قاچىلانغىنى
163
باھا نومۇرى
2 0 0
نەشرى
0.1
قۇرۇلغان ۋاقتى
2021-01-25
يېڭىلانغان ۋاقتى
2021-01-25
ئىجازەتنامىسى
يوق
قوللايدىغىنى

Adds the "published" date (and "modified" date if different) to Bandcamp release pages so it's easier to see when exactly the release was actually added to Bandcamp.