reorder functions in array.scad

list_{de,in}creasing -> is_{de,in}creasing, add strict option to both

tests/test_vectors.scad

@@ -208,6 +208,23 @@ module test_vector_nearest(){
 test_vector_nearest();
 
 
+
+module test_min_index() {
+    assert(min_index([5,3,9,6,2,7,8,2,1])==8);
+    assert(min_index([5,3,9,6,2,7,8,2,7],all=true)==[4,7]);
+}
+test_min_index();
+
+
+module test_max_index() {
+    assert(max_index([5,3,9,6,2,7,8,9,1])==2);
+    assert(max_index([5,3,9,6,2,7,8,9,7],all=true)==[2,7]);
+}
+test_max_index();
+
+
+
+
 module test_pointlist_bounds() {
     pts = [
         [-53,27,12],