Added new class & events to access raw data of contacts
Added the example to test various types of contacts
Merge pull request #9 from bjorn/master

Some general cleanups
Merge pull request #10 from folibis/master

New Contact class (2)
Removed self-include from box2dfixture.h

Also removed some superfluous forward declarations.
box2d-static.pri update
Some fixes in Box2DFixture

* Fixed leaking of memory in case of putting vertices too close
  together, by using a QScopedArrayPointer to simplify cleanup.

* Fixed check on minimum amount of vertices for Chain fixture,
  which should be at least three for a looping chain.

* Some small coding style fixes.