fixes & updates

added uniq function
task.json
doc updates

stdlib/stdlib.lsp

@@ -85,8 +85,21 @@
 (defun make-list (size)
     (make-list-of size nil))
 
+(defun uniq (lst)
+    (do
+        (define rslt '())    
+        (define i 0)
+        (define lst_len (len lst))
+        (while (< i lst_len)
+            (define e (index lst i))
+            (if (not (member rslt e)) 
+                (define rslt (push rslt e)))
+
+                (define i (inc i)))                
+
+        rslt
+    ))
 
-; quicksort
 (defun quick-sort-by (l cmp)
     (if (<= (len l) 1)
         l