Function boxList

boxList(
    items: Thing<string | ThingType>[],
    trace?: LocationTrace,
    start?: string,
    end?: string,
    join?: string,
): Thing<list>
Parameters
- items: Thing<string | ThingType>[]
- trace: LocationTrace = UNKNOWN_LOCATION
- start: string = "["
- end: string = "]"
- join: string = ", "
Returns Thing<list>