title: String formatting of cell comments EPPLUS library
body: <p>Is it possible to format the comments when creating a <em>.xlsx</em> file using EPPLUS?
  As far as I know the only method is:
  <br/>
  ExcelComment <strong>AddComment</strong>(string <em>Text</em>, string <em>Author</em>);<br/></p>
  
  <p>Are there other known limitation to comments with this library? <br/>
  If yes is there a better alternative in .net ?</p>