* Fix for wild card import statements (e.g., "from Freestyle import *") was done.
Now import statements are either without using "from" or with all imported names
explicitly listed.
* GNU GPL header blocks were added to Python programs. Additional code clean-up
was also made.
* Removed freestyle_init.py and extra-lines.sml that were no longer used.
* Proper handling of keyword arguments was implemented in Operators and ContextFunctions,
as well as in methods of Interface0D, Interface1D, Iterator, their subclasses, Noise and
IntegrationType.
* Operators' methods and functions in the ContextFunctions module were renamed from
CamelCase to lower cases + underscores. Style modules were updated accordingly.
* Additional code clean-up was also made.
Major API updates were made as in part 3 to address code review comments.
This revision focuses on Python wrappers of C++ iterators.
* Most getter/setter methods were reimplemented as attributes using PyGetSetDef.
* The naming of methods and attributes was fixed to follow the naming conventions
of the Blender Python API (i.e., lower case + underscores for methods and attributes,
and CamelCase for classes). The only irregular naming change is the following, to
better indicate the functionality:
- ChainingIterator: getVertex --> next_vertex
* In addition, some code clean-up was done in both C++ and Python. Also duplicated
definitions of predicate classes were removed.
