1.1: Made sure "empty" stars didn't show up in feeds, where the CSS would make it look as though they were black like the "full" stars, hence indicationg a 6 star rating always. Also fixed a problem with the default symbol not working.
1.2: Added shorter syntax.
1.2.5: Wrapped the rating in "wpautop" to ensure it flows properly in your content.
1.5: New feature: [relatedratings=x] shows y other posts containing a rating of x stars. Also added buttons in both the visual and HTML editor for inserting such ratings.