Shows a list of links to posts from previous years on or near this date, 1 per year. Provides a function to use in a theme, as well as a widget
Added option to use fixed date range. Added option to limit proximity to current date -- eg. Only show posts from previous years within 30 days of today.
Fix to use sidebar's title size instead of hard coded h2. Added !important to commented out CSS that enabled full text links to appear.