The text of this Zoning Law and Zoning Map of the Town, enacted by the Town Board, hereby supersedes all previous enactments and amendments, and, from their taking effect, all such previous enactments and amendments thereto shall be repealed. Such repeal shall not affect or impair any act, liability, penalty, forfeiture or punishment incurred prior to the time such repeal takes effect, but the same may be employed, asserted, enforced or prosecuted as fully and to the same extent as if such repeal had not been effected.