(1) The provisions of this code apply to any offense defined in this code and committed after January 1, 1974.
(2) Unless otherwise expressly provided or unless the context otherwise requires, the provisions of this title and Title 46 govern the construction of and punishment for any offense defined outside of this code and committed after January 1, 1974, as well as the construction and application of any defense to a prosecution for such an offense.
(3) The provisions of this code do not apply to any offense defined outside of this code and committed before January 1, 1974. Such an offense must be construed and punished according to the provisions of law existing at the time of the commission thereof in the same manner as if this code had not been enacted.