* Fixed a bug in `Curve::evaluate_rational()` method which causes erroneous NURBS curve evaluation * Added a new NURBS curve example (ex_curve04.py) on evaluation of a full circle * Documentation updates
2.3.3
* Documentation updates for the [ReadTheDocs](http://nurbs-python.readthedocs.io/en/latest/) page
2.3.2
* Added `rotate_x` and `rotate_y` functions to the Grid class * Updated documentation * Minor bug fixes
2.3.1
* Added `read_ctrlptsw()` method to the `Curve` class * Some minor documentation updates