Ensures proper casing of Pipfile packages

def ensure_proper_casing(self):
        """Ensures proper casing of Pipfile packages"""
        pfile = self.parsed_pipfile
        casing_changed = self.proper_case_section(pfile.get("packages", {}))
        casing_changed |= self.proper_case_section(pfile.get("dev-packages", {}))
        return casing_changed