remove Vector2_crossVectorAndNumToOut and use vector_maths scaleOrthogonalInto instead
remove vector legacy code
start using of aabb2
finish using aabb2
remove unused axis_align_box code
Remove setFromCombination and use hull() instead
remove Aabb2_testOverlap and use Aabb2#intersectsWith instead
remove Aabb2_setFrom and use Aabb2#copyFrom instead
remove unused line
add git path to pub spec as aabb2 is not in the official release of vector_math yet
fix git url
Exchange caller and argument in all calls of Aabb2#contains because the function was misnamed all the time.
No need for pubspec.yaml change
Merge branch 'vector-legacy' of git://github.com/laszlokorte/dart-box2d into laszlokorte-vector-legacy
Updated documentation
Reduce number of allocations in collision
Fix README link to drone.io status

Closes #24