Add WP81 sandbox sample; move sandbox out of src
Undo sound.ts
Merge branch 'master' of https://github.com/eonarheim/Excalibur into dev-kamran
Change spec shell task

- Updated shell:tests to glob spec files instead of manual list
- Build should fail now
Fix test proj
Merge master to dev-kamran
Compile/finish merge
Implemented basic DynamicTreeCollision resolution
Fix for PreventCollision collision types
Fix collision tests
Fix small bug in mismatched sprites for IE and FireFox
Implement remove actor from DynamicTree
Progress on new input eventing
Support FF
Documentation for Gamepads
Update sandbox with new APIs
Publish gamepad events on individual pads
Update path to sandbox ts
Add multi-init calls to fix controller added post load
Updated pointer API to support multiple pointers