An amendment to the Bee Cave city charter requiring voter approval for the city to take any action or pass any ordinance addressing subdivision, significant physical change or alteration, sale, purchase, donation, exchange, or certain leasing of city real property; requiring all deliberation of such action by the city council or city boards and commissions be done in public, disclosing all conditions and specifics of such proposal; not requiring voter approval of the city purchase of real property but requiring all conditions and specifics of such purchase be disclosed in an open meeting.