first thanks for the great class and the great work you are doing.
I've been playing a bit with the code and doing some tests I know you are working hard to add more functionality to it and I'm just wondering if it can be added an option to keep the excel file unchanged.
With unchanged I mean that once you open it with the reader everything that is not touched will be exactly as it was. Not even sure if this is possible but it will be a great option so that we could cover things that are not yet implemented directly on the
For example as an easy test, the colors of a chart. The original excel file has some colors and the final output file as the chart has not been modified in any way keeps original colors. Again not sure if is even possible... just an idea.
Many thanks again for the great work!