This update for python-relatorio fixes the following issues:

- python-magic added to requirements

Update to version 0.8.1:

* Add support for Python 3.7
* Escape invalid XML characters
* Enforce closing tag to be the same directive as the opening
* Use compression for zip file
* Write mimetype as first file of the zip file

This update was imported from the openSUSE:Leap:15.0:Update update project.