olddoc 1.2.0 - multiple archive URLs

Users using .olddoc.yml to add links to mailing list archives
will now be pleased to know "ml_url" and "nntp_url" fields
accept arrays.

This release also fixes bold highlighting of the current
module/class page for APIs.

7 changes since 1.1.2:
      bold class bar to highlight current page
      copyright updates for 2016
      tail: shorten the footer section
      head: use old-style <meta> tags for compatibility
      nodoc some internals
      tail: support multiple URLs for archives
      tail: fix divider when private email does not exist