The PHPExcel module allows developers to export/import data to/from real Excel files.
The idea behind this module is to have a single module for handling the export or import of Excel files, instead of multiple modules handling specific cases.
The 4.0.x version uses the composer to automatically manage dependencies. You just need to use the composer to download this module, it will automatically handle the dependence.
It provides a very simple way for developers to use it.
Because i didn't find a way with workflow, action and trigger to send a mail to all the person involved in a node creation when the node is publish, i decide to make this small module.