Improve math module (#396)

* Improve math module

- Mark almost everything constexpr
- Equality (a == b) is now exact, down to the bit level. If you want approximate equality use the new ApproxEqual method/static method
- Rename Nz::Extend to Nz::Extent
- Removed Make[] and Set[] methods in favor of their static counterpart and operator=

src/Nazara/Utility/Node.cpp

@@ -367,7 +367,7 @@ namespace Nz
 	{
 		EnsureDerivedUpdate();
 
-		m_transformMatrix.MakeTransform(m_derivedPosition, m_derivedRotation, m_derivedScale);
+		m_transformMatrix = Matrix4f::Transform(m_derivedPosition, m_derivedRotation, m_derivedScale);
 		m_transformMatrixUpdated = true;
 	}
 }