This change fixes new errors detected by the last version of pycodestyle
(2.2.0), which is a dependency of flake8:
./tests/test_spec_examples.py:51:1: E305 expected 2 blank lines
after class or function definition, found 1
./tests/test_spec_examples.py:139:1: E305 expected 2 blank lines
after class or function definition, found 1
See pycodestyle changelog at 2.2.0 and
https://github.com/PyCQA/pycodestyle/pull/593.