Update utils documentation.

doc/utils.md

@@ -211,6 +211,14 @@ UTF-8 BOM, removes it.
 Returns a list of strings representing all the lines produced by
 running the command given.
 
+    (get-process-exit+output-lines cmd . args)
+
+* ```cmd``` - a string with the command
+* ```args``` - list of arguments to pass to process
+
+Returns two values - an exit code and a list of strings representing
+all the lines produced by running the command given.
+
     (process-send/recv cmd args . lines)
 
 * ```cmd``` - a string with command
@@ -515,3 +523,7 @@ Without this module compilation with ```current-milliseconds```
 results in warnings on chicken scheme >=5.3 and compilation under
 chicken scheme <5.3 results in error with
 ```current-process-milliseconds```.
+
+    (today/iso)
+
+Returns the current date as string in ISO YYYY-MM-DD format.