Add copyright headers
Hi @alejandroi2cat and @rizktouma ,
As commented by email, I have created this merge request with the changes we agreed. I have added the copyright headers to the source code files. Unfortunately I have not been able to add both of you as contributors. Please, replace "[name] - [contribution]" with your names and contributions. You will need to do it in less than 20 files that where there is a copyright header.
Thanks Best regards David