Implemented the new graphics API:

- Removed the internal classes sf::Renderer and sf::Matrix3
- Split sf::Drawable into sf::Drawable and sf::Transformable
- Added sf::Transform
- Added sf::Vertex
- Added sf::VertexArray
- Types of shapes are now handled with their own derived class
- Modified the Pong example

include/SFML/System/Vector3.hpp

@@ -82,7 +82,7 @@ public :
 /// \relates Vector3
 /// \brief Overload of unary operator -
 ///
-/// \param right Vector to negate
+/// \param left Vector to negate
 ///
 /// \return Memberwise opposite of the vector
 ///