Hatton v. Bonner, ___ F.3d ___ (9th Cir. Jan. 27, 2004) (amendment to Penal Code 290, requiring registration for persons convicted of violating Penal Code 220 [assault with intent to commit oral copulation], could be applied retroactively to defendant who committed offense prior to the amendment, because registration is not punishment), citing Smith v. Doe, 123 S. Ct. 1140 (2003).