<!-- First of all, please read this section https://github.com/securedeveloper/react-data-export/blob/master/CONTRIBUTING.md Some advices before file an issue * Give a brief explanation of the issue, suggestion or feature to request. * If the issue is a question, provide as much information you have available. * How can I do in order to reproduce it? What environment? * Define which version the issue happens and whether previous version the behaviour is correct. --> Active Sheet - Feature #### My reason: Having the ability to choose an active sheet based upon a prop on ExcelFile.
