Homestead Property Tax Benefits for Long-term Owners; Proposing amendments to the State Constitution to provide that the assessed value of homestead property may not increase after 20 years of ownership and residency, to provide an additional homestead tax exemption equal to 50 percent of the assessed value of property, other than school district levies, for persons who have owned and resided on the property as their permanent residence for 30 years or more, and to provide an effective date, etc.