org-imenu-filter to filter imenu-list with "regular" tags/properties expressions.

Thank you for bringing imenu-list to my attention with your post the other day. I imagine this post is in response to the many, "How do you get it to look like that?" messages you received. I wasn't one of them but that's only because I hadn't gotten around to bugging you yet. Thank you.

I discovered it only a few days ago but it's really neat and simple. With this filter capability, it's even more convenient (to me).