Must have plugin for developers using custom post types and taxonomies

If you’re writing a plugin that uses custom post types or taxonomies, and are perhaps having problems with the way rewrites are working, this is the plugin for you.

One feature request — I’d like to have a button on the plugin’s admin page that flushes rewrite rules and reloads the page. I’m always going back and forth between this plugin and Settings->Permalinks when I make a change to my code.