All codes, and parts thereof, and all laws amendatory thereof and all other statutes, and parts thereof, of a general and permanent nature in effect on December 31, 1974, are repealed unless (1) expressly continued by specific provision of this Code, (2) omitted improperly or erroneously as a consequence of compilation, revision, or both, of laws enacted subsequent to the enactment of the Code which became effective on February 23, 1953, including, without limitation, any such omissions that may have occurred during the compilation, revision, or both, of the laws comprising this Code, or (3) omitted, changed or modified by the Revisors, or their predecessors, in a manner not authorized by § 211 of this title. In the event 1 of the above exceptions should be applicable, the law as it existed prior to May 13, 1975, shall continue to be valid, effective and controlling.