The Maine Administrative Procedure Act shall not apply to:
1. Adjudicatory proceedings. Adjudicatory proceedings commenced by filing of an application, request for a hearing, agency notice of a hearing or otherwise in accordance with preexisting law, prior to July 1, 1978;
2. Licensing proceedings. Licensing proceedings commenced by filing an application for a license, or renewal or reissuance thereof, or by notice of agency proceedings affecting an existing license, prior to July 1, 1978; or
3. Judicial review. Judicial review of any of the foregoing.
4. Collective bargaining. State personnel rules negotiated as part of any collective bargaining agreement.