
- Take back whatever code we need from newtests and delete it.
  These test files have been completely migrated to newtests:
    analyse_demos.py
    elements.py

- Add missing lifting tests, both coverage and functionality

- Need better testing of algorithms, covering all of { algorithms } x { types }.


Improve tests file by file:

R = Review
M = Move somewhere more suitable
A = Add something like this
D = Done, looks good

R   test_elements.py
A   test_expr.py
M   test_base.py
R   test_literals.py
A   test_geometry.py
R   test_indices.py
R   test_arithmetic.py
R   test_future_division.py
A   test_tensoralgebra.py
A   test_listtensors.py
R   test_conditionals.py
R   test_lifting.py
R   test_diff.py
R   test_derivative.py
R   test_evaluate.py
R   test_forms.py
R   test_illegal.py
R   test_transformations.py
R   test_expand_indices.py
R   test_split.py
R   test_simplify.py
R   test_str.py
R   test_classcoverage.py
R   test_algorithms.py
R   test_analyse_demos.py
R   test_ffcforms.py

