* Improved documentation and release it to *Read the documentation* site;
* Built some diagrams for documentation with
`diagrams package <https://github.com/mingrammer/diagrams>`_, a distinct makefile
command ``diagrams`` has been added to build them into documentation static file
directory;
* Added new "check" method to composer and processors to display output debugging about
project composition;
* Moved all Django related stuff to contrib.django;
* Fixed RTD configuration to use Python3.8 to fix building;
* Changed ``Composer.find_app_module`` so it only emits ``log.debug`` instead of
``log.warning`` when it does not find a module;