No new ordinance shall be construed to repeal a former ordinance, whether such former ordinance is expressly repealed or not, as to any offense committed against the former ordinance, or as to any act done, and penalty, forfeiture or punishment incurred, or any right accrued, or claim arising before the new ordinance takes effect, save only that the proceedings thereafter shall conform so far as practicable, to the ordinances in force at the time of such proceeding. If any penalty, forfeiture or punishment is mitigated by any provisions of a new ordinance, such provision may, by consent of the person affected by applied to any judgment pronounced after the new ordinance takes effect. This section extends to all repeals, either by express words or by implication, whether the repeal is in the ordinance making any new provision upon the same subject or in any other ordinance.
(1960 Code, § 1.08)