5. Factor out the unit-norm basis (and operator symmetry) tests once
all of the algebras pass.
-6. Implement random_instance() for the main EJA class.
-
-7. Implement random_instance() for the subalgebra class.
+6. Add a TrivialEJA class and use it in the tests for is_trivial().
+ The random_eja() function should also be able to return these.