Added
- Start using a Changelog.
- Added docstrings for essential classes, methods and functions.
- Add array with point locations for all elements.
Changed
- Rename element methods (from `basis` to `function` and from `basisprime` to `gradient`).
- Make constitutive materials more flexible (allow material parameters to be passed at stress and elasticity evaluation `umat.gradient(F, mu=1.0)`).
- Rename `ndim` to `dim`.
- Simplify element base classes.
- Speed-up calculation of indices (rows, cols) for Fields and Forms (about 10x faster now).
- Update `test_element.py` according to changes in element methods.
Removed
- Automatic check if the gradient of a region can be calculated based on the dimensions. The `grad` argument in `region(grad=False)` has to be enforced by the user.