Physics: forgot to add test case to the list.
Physics: copypaste error. TWICE! OMG!
Physics: another mistake in CapsuleTest.

The way the shapes are currently implemented is unsustainable.
SceneGraph: assert that original Object::setClean() is called.
Using CORRADE_ASSERT_UNREACHABLE() instead of CORRADE_ASSERT(false).
Math: added TODO.
Math: added function fma().