The every function tests whether all elements in the list pass the test implemented by the provided function.
Since: 3.0
Parameters
lt: the list.test: a test function that accepts an element and returnstrueorfalse.
Examples
use <util/every.scad>
biggerThanZero = function(elem) elem > 0;
assert(every([1, 30, 39, 29, 10, 13], biggerThanZero));

