Map sorting

* Checkpoint work on sorting and CDE

* sort seems to be working

* Complete testing and doc

* revert float stuff so this PR is only sorting

* Documentation and tidiness for UsefulOutBuf

* Final tidy-up of sorting doc and code

---------

Co-authored-by: Laurence Lundblade <lgl@securitytheory.com>
diff --git a/test/UsefulBuf_Tests.h b/test/UsefulBuf_Tests.h
index 235358e..e00aa37 100644
--- a/test/UsefulBuf_Tests.h
+++ b/test/UsefulBuf_Tests.h
@@ -1,6 +1,6 @@
 /*==============================================================================
  Copyright (c) 2016-2018, The Linux Foundation.
- Copyright (c) 2018, Laurence Lundblade.
+ Copyright (c) 2018-2023, Laurence Lundblade.
  Copyright (c) 2021, Arm Limited.
  All rights reserved.
 
@@ -52,4 +52,6 @@
 
 const char * UBAdvanceTest(void);
 
+const char * UOBExtraTests(void);
+
 #endif