* Added support for additional mouse buttons

* Renamed mouse button enum

Co-authored-by: Lambert Wang <lambert.ww@gmail.com>

* Fix some warnings in examples.

* cleanups from review

Co-authored-by: Jeffery Myers <JefMyers@blizzard.com>

Replaced Vector3 by direct values, easier to use and understand

Redesigns, deletes and renames

Also noted authors propertly on contributed examples