title: string extensions for "today", "yesterday", "8 seconds ago", etc. in C#
body: <p>Has anyone ever heard of, or have access to some c# string extension snippet(s) or library that turns stuff like "yesterday", "today", "tomorrow" into DateTimes or "8 seconds ago", "10 minutes from now" into TimeSpans?</p>
  
  <p>If not, any thoughts on what that might look like in C#?</p>
  
  <p>Thanks</p>