Put colon-separated compound statement on separate lines.

def fix_e701(self, result):
        """Put colon-separated compound statement on separate lines."""
        line_index = result['line'] - 1
        target = self.source[line_index]
        c = result['column']

        fixed_source = (target[:c] + '\n' +
                        _get_indentation(target) + self.indent_word +
                        target[c:].lstrip('\n\r \t\\'))
        self.source[result['line'] - 1] = fixed_source
        return [result['line'], result['line'] + 1]