Stale doc file. Fix hashtag links. Trace some GC stuff and try malloc_trim, whynot.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4166 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/ssb/commonmark-hashtag.js

@@ -39,7 +39,7 @@ function splitMatches(text, regexp) {
   return result;
 }
 
-const regex = new RegExp("\\W#[\\w-]+");
+const regex = new RegExp("(?<!\w)#[\\w-]+");
 
 function split(textNodes) {
   const text = textNodes.map(n => n.literal).join("");