• Subclasses of Moose::Meta::TypeConstraint are now converted to the
  appropriate subclasses of Type::Tiny by Types::TypeTiny::to_TypeTiny,
  instead of always being converted to the base class. This improves
  inlining amongst other things.
  
• When types are declared by Type::Library's -declare import parameter,
  the temporary subs installed can now generate placeholder type
  constraints which allow the types to be used in recursive type
  definitions.