Documentation Update

- Added David J Patrick as contributing author for the massive list
  of feature ideas he has provided, and the accompanying dialogue.
- Added mention of the Github issue tracker.

html/task.html

@@ -109,7 +109,8 @@
 
                 <h4>New in version 1.7.0 (?)</h4>
                 <ul>
-                  <li>
+                  <li>Improved the errors when parsing a corrupt or unrecognized pending.data
+                      or completed.data file (thanks to T. Charles Yun).
                 </ul>
 
                 <p>