Major inbox feed, contains major activities such as notes and images.

def major(self):
        """ Major inbox feed, contains major activities such as notes and images. """
        url = self._subfeed("major")
        if "major" in self.url or "minor" in self.url:
            return self
        if self._major is None:
            self._major = self.__class__(url, pypump=self._pump)
        return self._major