Power to issue bonds.

A city shall have power to issue bonds from time to time in its discretion to finance in whole or in part the cost of the preparation, acquisition, purchase, lease, construction, reconstruction, improvement, alteration, extension or repair of any project hereunder and including the acquisition, installation and maintenance of parking meters. A city shall also have the power to issue refunding bonds for the purpose of paying or retiring bonds previously issued by it hereunder.