processed John Dalbec's fix of 2000/dlowe

Updated `bugs.html` to reflect the fix of all known bugs in `2000/dlowe`.

Added thank you to John Dalbec in `thanks-for-help.md`.

Added processing of "%%REPO_TOP_URL%%" tokens to `bin/subst.default.sh`.

Updated `find-missing-links.sh` to not falsely report missing links
when a "%%REPO_TOP_URL%%" token is used.

Changed `bin/subst.default.sh` VERSION from "1.3.2 2024-08-05"
to "1.4.0 2025-04-16".

Changed `bin/find-missing-links.sh` VERSION from "1.1.1 2024-04-28"
to "1.2.0 2025-04-16".

Due to a `pandoc(1)` bug fix, `2011/fredriksson/index.html` and
`2012/kang/index.html` were modified.  The bug fix removed extraneous
whitespace that was previously introduced into HTML under certain
situations.  These 2 changes do **NOT** impact the way web browsers
render these pages, however.

Updated sitemap.

Tested the above via `make www gen_status gen_sitemap timestamp` on macOS.

status.html

@@ -425,17 +425,18 @@
 
 <!-- START: this line starts content generated by: bin/status2html.sh -->
 
-<h1 id="the-ioccc-is-open-for-submissions">The IOCCC is open for submissions</h1>
-<p>See the <a href="news.html">IOCCC news</a> page for possible updates to rules, guidelines, tools and deadlines.</p>
-<p>See <a href="quick-start.html#enter">How to enter the IOCCC</a> FAQ for additional information.</p>
-<p><strong>IMPORTANT</strong>: If you viewed the preliminary IOCCC rules, guidelines, and tools while the IOCCC status was pending, be sure to review the official IOCCC rules, guidelines, and tools for any changes that may have been recently made before submitting to the IOCCC.</p>
+<h1 id="the-ioccc-is-pending">The IOCCC is pending</h1>
+<p>While the IOCCC is not open now, there is a tentative opening date for the next IOCCC.</p>
+<p>See the <a href="news.html">IOCCC news</a> for details including the tentative scheduled opening date.</p>
+<p>A preliminary <a href="next/rules.html">IOCCC rules</a>, preliminary <a href="next/guidelines.html">IOCCC guidelines</a>, and preliminary <a href="https://github.com/ioccc-src/mkiocccentry">mkiocccentry tools</a> have been posted.</p>
+<p>Comments and suggestions on these preliminary items are welcome, see <a href="quick-start.html#feedback">FAQ 0.5</a> for information on how.</p>
 <h1 id="status.json">status.json</h1>
 <pre><code>    {
         &quot;no_comment&quot; : &quot;mandatory comment: because comments were removed from the original JSON spec&quot;,
         &quot;IOCCC_status_version&quot; : &quot;1.0 2024-03-09&quot;,
-        &quot;contest_status&quot; : &quot;open&quot;,
-        &quot;news_update&quot; : &quot;2025-03-15T22:16:27+00:00&quot;,
-        &quot;status_update&quot; : &quot;2025-03-05T18:15:23+00:00&quot;
+        &quot;contest_status&quot; : &quot;pending&quot;,
+        &quot;news_update&quot; : &quot;2025-04-16T16:35:11+00:00&quot;,
+        &quot;status_update&quot; : &quot;2024-12-29T10:01:35+00:00&quot;
     }</code></pre>
 
 <!-- END: next line ends content generated by: bin/status2html.sh -->