• Minor optimization for Type::Params: sometimes it would construct an
  arrayref of hashref from the slurpy arguments to a function and then
  check that they arrayref it created was an arrayref, or check the
  hashref it created was a hashref. Those checks seem unnecessary; if they
  had ever failed it would indicate something deeply wrong with Perl
  itself. These superfluous checks are now avoided.
  
• Minor optimization for Type::Params: sometimes it would wrap a goto in
  a do block for no reason. That could potentially slow down the call as
  Perl might create a new lexical context unnecessarily. It is unlikely to
  make a measurable difference.