Primo: strip entire parenthesis with date info from author names

Otherwise I get "First ()" as author name.
* Match any parenthesis with a range and almost any alphanumeric character,
  to include things like circa, ca., AC, a.C., fl. Could probably be less
  restrictive and allow any character here, parentheses are unlikely to
  contain an actual name.
* Also add a test from beic.it's install. Will make it pass in follow-ups.
Primo: add some more common paths to extract data from