Update copyrights and version

LICENSE

@@ -2,7 +2,7 @@ Silo -- a simple, general purpose file system for LSL via HTTP
     version 2006-07-09-beta
     by Zero Linden
     Updated by John Dougan
-    version 2021-07-04
+    version 2021-08-22
 
 Copyright (c) 2006 Linden Lab
 Changes Copyright (c) 2021 John Dougan

README

@@ -2,7 +2,7 @@ Silo -- a simple, general purpose file system for LSL via HTTP
     version 2006-07-09-beta
     by Zero Linden
 
-    version 2021-07-04
+    version 2021-08-22
     Updated by John Dougan
 
     Copyright (c) 2006 Linden Lab
@@ -147,10 +147,10 @@ Some documentation on Replit's web access is at
     https://docs.replit.com/hosting/deploying-http-servers 
 
 Run `make tests` and check test.log.  In the Replit PHP Web Server
-configuration the use of '..' in the path tests may "fail". What is
-actually happening is that the PHP Web Server is silently handling
-some situations that Apache does not, making it work with an altered
-URL instead of the expected error.
+configuration the use of '..' in the path tests may "fail". What I
+think is actually happening is that the PHP Web Server is silently
+handling some situations that Apache does not, making it work with an
+altered URL instead of the expected error.
 
 If you run the tests against a Replit external https URL, you will see
 additional test failures in checking for disallowed path characters.
@@ -165,7 +165,7 @@ restart feature if you are paying:
     https://docs.replit.com/repls/always-on
 
 If you really need to keep the repl up at all times, get one of the
-apps/libraries that will regularly push http requests at the server to
+apps/libraries that will regularly push HTTP requests at the server to
 keep the session alive. These are used to run a lot of discord bots
 and for system uptime monitoring.
 

VERSION

@@ -19,3 +19,6 @@ Changes Copyright (c) 2021 John Dougan
 
 2021-07-04
     Updated documentation. Tests have more feedback and a flag SHOW_PATHS to show more.
+
+2021-08-22
+    Updated documentation. HEAD method now supported. Tests check more return data and HEAD..

silo.php

@@ -4,9 +4,13 @@
     Silo -- a simple, general purpose file system for LSL via HTTP
         version 2006-07-09-beta
         by Zero Linden
+        version 2021-08-22
+        by John Dougan
     
         Copyright (c) 2006 Linden Lab
         Licensed under the "MIT" open source license.
+        Changes Copyright (c) 2021 John Dougan
+        Licensed under the "MIT" open source license.
     
     This file is only part of the whole distribution.
         silo.php -- the main impelmentation

test.py

@@ -5,7 +5,7 @@
 
         version 2006-07-09-beta
         by Zero Linden
-        version 2021-07-04
+        version 2021-08-22
         by John Dougan
     
         Copyright (c) 2006 Linden Lab