Updates to 2020/ferguson2

Added testing procedure (markdown, html: testing-procedure.{md,html}).
Updated the recode.{md,html} and README.md for this as well.

Updated the hidden message file (enigma.html) for a bit more fun.

Updated manifest, rebuilt index.html and .entry.json.

2020/ferguson2/index.html

@@ -401,7 +401,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <!-- BEFORE: 1st line of markdown file: 2020/ferguson2/README.md -->
-<p>https://github.com/ioccc-src/temp-test-ioccc/blob/master/## To build:</p>
+<h2 id="to-build">To build:</h2>
 <pre><code>    make</code></pre>
 <p>The author provided alternate code that prints the output one character at a
 time to make it a bit more like the real thing in that it isn’t dumped out all
@@ -472,10 +472,14 @@ out! Can you figure out why this works this way?</p>
 <ul>
 <li>Some useful information about <a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/recode.c">recode.c</a></li>
 </ul></li>
-<li>[enigma.html][]
+<li><a href="enigma.html">enigma.html</a>
 <ul>
 <li>NOTE: see <a href="recode.html">recode.html</a> (or <a href="recode.html">recode.html</a> for details about how to decrypt this!</li>
 </ul></li>
+<li><a href="testing-procedure.html">testing-procedure</a>
+<ul>
+<li>How the author tested the code and why it was necessary to do it in the way it was</li>
+</ul></li>
 </ul>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>My remarks about my <a href="https://en.wikipedia.org/wiki/German_Army_(1935%E2%80%931945)">Heer</a> (army) and <a href="https://en.wikipedia.org/wiki/Luftwaffe">Luftwaffe</a> (air force) <a href="https://www.cryptomuseum.com/crypto/enigma/index.htm">Enigma
@@ -1004,6 +1008,10 @@ did not implement this in the recode program but what would it be anyway? If the
 user here wants to they could add three letters to their message beginning. I
 don’t think there need be any addition to the recode program - at least not
 that.</p>
+<h3 id="testing-procedure">Testing procedure</h3>
+<p>There was a need for a testing procedure as a single character difference will
+change the rest of the text. If you wish to see how I went about this see
+<a href="testing-procedure.html">testing-procedure.html</a>.</p>
 <h2 id="authors-dedication">Author’s dedication:</h2>
 <div id="winning">
 <h3 id="winning-thoughts-dedications-and-thanks">Winning thoughts, dedications and thanks</h3>
@@ -1098,6 +1106,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="obfuscation.txt">obfuscation.txt</a> - about the obfuscation of this entry - encrypted with entry</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/recode.c">recode.c</a> - Enigma machine configurator source code</li>
 <li><a href="recode.html">recode.html</a> - Enigma configurator documentation</li>
+<li><a href="testing-procedure.html">testing-procedure.html</a> - details about the author’s testing procedure</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/try.alt.sh">try.alt.sh</a> - script to try alternate code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/try.sh">try.sh</a> - script to try entry</li>
 <li><a href="try.this.txt">try.this.txt</a> - sample input</li>
@@ -1115,6 +1124,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/obfuscation.md">obfuscation.md</a> - markdown source for obfuscation.html</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/.path">.path</a> - directory path from top level directory</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/recode.md">recode.md</a> - markdown source for recode.html</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson2/testing-procedure.md">testing-procedure.md</a> - markdown source for testing-procedure.html</li>
 <li><a href="index.html">index.html</a> - this web page</li>
 </ul>
 <hr style="width:10%;text-align:left;margin-left:0">