Add 'Fork me on GitHub' banner
Add link to Gittip
Fetch Drupal 9 issue counts
Use libxml internal errors
Use last page link to get total page count

For large issue counts, the pager only shows a limited number of links to
the individual pages, so just counting those links will give a capped
value. The link to the last page of issues is always present, and
extracting the page number from the url should always give the correct
page count.
Start tracking normal issue counts