Add a random module.

test/random/float_min_max.wren

@@ -0,0 +1,10 @@
+import "random" for Random
+
+var random = Random.new(12345)
+
+var below = 0
+for (i in 1..100) {
+  var n = random.float(2, 5)
+  if (n < 2) System.print("too low")
+  if (n >= 5) System.print("too high")
+}