1. Changed application of stylesheets: Old version added a style-tag into the body
   which works in most browsers but violates HTML rules (validator complains).
   New version now uses the style attribute instead.
2. Allowed the use of IDs or classes instead of custom styledefinitions by starting
   the style definition with '.' or '#'. This makes it easier to match the design of
   the currently selected theme.
3. Added an alt-tag option for the image since this is required by HTML (validator
   complains).
4. Reduced the plugin to title, image and description. This allows the plugin to work
   using only styles found within the theme stylesheet and fits more closely to about
   boxes found on many blogs. Copyright and other information can easily be integrated
   into description providing more flexiblity and a more straight forward configuration
   interface at the same time.