This act shall be liberally construed. Nothing contained herein is or shall be construed as a restriction or limitation upon any powers which the authority might otherwise have under any other law of this state, and the provisions of this act are cumulative to such powers. The provisions hereof do and shall be construed to provide a complete, additional and alternative method for the doing of the things authorized and shall be regarded as supplemental and additional to powers conferred by any other laws. The issuance of bonds under the provisions hereof need not comply with the requirements of any other state laws applicable to the issuance of bonds, notes and other obligations.