Py3traits

-------------------
- New feature: Setter and Deleter for properties are now supported
- New example: examples/instance_is_composed_from_cherrypicked_property_in_class.py
- New example: examples/instance_is_composed_from_cherrypicked_property_in_instance.py
- Updated example: examples/class_is_composed_from_cherrypicked_property_in_class.py
- Updated example: examples/class_is_composed_from_cherrypicked_property_in_instance.py

-------------------
- New feature: Decorator type_safe to check function arguments
- New feature: combine_class function takes name for new class as first argument
- Refactoring magic.py to look less like black magic
- Improving errors.py exception class creation to accept custom messages
- Adding unit tests

-------------------
- New feature: Rename of composed traits
- Cleaning up parts belonging to py2traits

-------------------
- PEP8 fixes
- General cleaning for all files
- Removed unused parts
- Removed Python 2 code

-------------------
- Splitting into two projects: py2traits and py3traits
- Taking new project template to use from cookiecutter.

0.9.0 Bringing back compatibility to Python 2.x
-----------------------------------------------
- Some small clean up too

-------------------------------------------------------------
- Redone function binding to include recompilation of the function
- Leaving Python 2.x into unsupported state temporarily.