I had implemented most of the changes I had talked about, including getting rid of the extra time column, and replacing it with a flag indicating whether the time-of-day should be displayed, or only the date.
One problem with these changes is that they would not be downward-compatible with the current version of this hack, so an "altertable" would be needed.
I had started to add editing capability. It involved changes to a bunch of files (several scripts and several templates). Keeping all of these files up to date when doing version upgrades would have been a big headache.
And then there was the birthdate modification to this hack.
These problems, combined with the fact that I was getting behind on other work, are why I had to abandon work on this hack.
Nikko, if you want, I could give you the changed files, although the changes are incomplete, and they're not fully tested or documented.
I'm wondering if it would be better to make the calendar a separate add-on, rather than a hacked forum.