3. Can be used in proprietary works
The license policy allow you to use this piece of code even inside commercial (not open source)
projects. So you can use this software without giving away your own (precious?) source code.

        void addImageFromStream(byte[] data)
        {
            if (data == null) return;
            using (var ms = new MemoryStream(data))
            {
                var image = Image.FromStream(ms);
                _worksheet.Row(_row).Height = (image.Height + 1).Pixel2RowHeight();
                _worksheet.Column(_col).Width = _worksheet.Pixel2ColumnWidth(image.Width + 1);
                var picture = _worksheet.Drawings.AddPicture("pic" + _row + _col, image);
                picture.From.Column = _col - 1;
                picture.From.Row = _row - 1;
                picture.From.ColumnOff = 2.Pixel2Mtu();
                picture.From.RowOff = 2.Pixel2Mtu();
                picture.SetSize(image.Width, image.Height);
            }
        }

OutputCacheAttribute.ChildActionCache = new MemoryCache("NewRandomStringNameToClearTheCache");

      var newBundle = isCss ? new Bundle(virtualPath, new CssMinify()) : new Bundle(virtualPath, new JsMinify());