Storage package information in ``self.packages``

        Args:
            project_name (str): This will be used as a the key in the
                dictionary.
            versions (list): List of ``str`` representing the available
                versions of a project.

def set_package_releases(self, project_name, versions):
        """ Storage package information in ``self.packages``

        Args:
            project_name (str): This will be used as a the key in the
                dictionary.
            versions (list): List of ``str`` representing the available
                versions of a project.
        """
        self.packages[project_name] = sorted(versions, reverse=True)