Adopting the "Uniform Premarital Agreement Act"; defining premarital agreement and property; requiring premarital agreements to be in writing and signed by both parties, providing for enforceability without consideration; specifying content options, right of a child to support not to be adversely affected by the agreement; agreement to be effective upon marriage of the parties; providing for amendment or revocation by written signed agreement; specifying conditions of unenforceability, issues of unconscionability to be decided by the court; imposing a statute of limitations for actions for relief under the agreements; conforming certain provisions regulating antenuptial and postnuptial contracts, agreements or settlements to the provisions (ra)