title: Turn off rounded corner in EPPLUS ExcelChart
body: <p>Reading <a href="https://github.com/JanKallman/EPPlus/pull/12/commits/6e228ce72a0e9a37ab54fcaa7c607715830fbe53" rel="nofollow noreferrer">Add RoundedCorners property to ExcelChart</a> I guess EPPLUS adds rounded corner to ExcelChart by default. I like to get rid of the rounded corner and keep ExcelChart in clean squared corner, but can't seem to find a way to do so in EPPLUS (something that I can easily toggle in Excel itself). </p>
  
  <p>I went through each property, and tried the following:</p>
  
  <pre><code>ExcelChart ec = ws.Drawings.AddChart("LineChart01", eChartType.LineMarkers);
  ec.Title.Text = "LineChart01";
  ec.Border.LineStyle = eLineStyle.Solid;
  ec.Border.LineCap = eLineCap.Square;
  ec.PlotArea.Border.LineCap = eLineCap.Square; 
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/8crsm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8crsm.png" alt="EPPLUS Chart Rounded Corners"></a></p>