add notices to those who wish for a greater challenge

We add the following level-3 header to help people identify text
they may wish to skip if they wish for a greater challenge:

```
```

After that notice we add:

```
**If you want a greater challenge, don't read any further**:
just try to understand the program via the source.

If you get stuck, come back and read below for additional hints and information.
```

And sometimes follow with:

```
```

Or sometimes follow with:

```
```

Where the alt code impacts a "greater challenge", we add instead:

```
**If you want a greater challenge, don't read any further**:
just try to understand the program without looking at the Alternate code.

If you get stuck, come back and look at the Alternate code.
```

And where a given command impacts a "greater challenge", we add instead:

```
**If you want a greater challenge, don't read any further**:
just try to understand the program without running the command below.

If you get stuck, come back and run the following command:
```

Perform `make www` to perform the above and test under macOS.

2004/hibachi/README.md

@@ -159,7 +159,7 @@ style](https://wiki.c2.com/?OneTrueBraceStyle).
 
 *  `Hibachi` can serve [www.ioccc.org](https://www.ioccc.org).
 
-*  Commented spoiler information available.
+*  Commented obfuscation change log information available.
 
 ### Known Issues
 
@@ -179,6 +179,19 @@ style](https://wiki.c2.com/?OneTrueBraceStyle).
 * Winner of The Far Too Much Free Time Award
 
 
+### NOTICE to those who wish for a greater challenge
+
+**If you want a greater challenge, don't read any further**:
+just try to understand the program via the source.
+
+If you get stuck, come back and read below for additional hints and information.
+
+
+### Obfuscation change log
+
+For additional hints about how the source was obfuscated, read [src/localhost/CHANGELOG.TXT](src/localhost/CHANGELOG.TXT).
+
+
 <!--
 
     Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.