ikiwiki 3.20170111 released with [[!toggle text="these changes"]]
[[!toggleable text="""
   * passwordauth: prevent authentication bypass via multiple name
     parameters (CVE-2017-0356, OVE-20170111-0001)
   * passwordauth: avoid userinfo forgery via repeated email parameter
     (also in the scope of CVE-2017-0356)
   * CGI, attachment, passwordauth: harden against repeated parameters
     (not believed to have been a vulnerability)
   * remove: make it clearer that repeated page parameter is OK here
   * t/passwordauth.t: new automated test for passwordauth"""]]