Cleans up code dealing with BufferGeometry
Updates the pick events to threes v69
Driver changes due to v69 updates

PointCould replaces ParticleSystem
Fixed a bug with the scene defined camera
Animation updates that are not complete
Passes in the animation data into the constructor
Updates the uvMap variable to uv
Updates the constructor for Matrix3
Adds variable for the Scene being created, and don't set the texture prop to null
Removes a comment
Removes computeCentroids which was deprecated
Adds a position property to Lights

Lights still inherent from Object3D, but now use the position property
to set either position(pointLight) or direction for DirectionalLights
Fixes an issue with a camera being assigned to the scene instead of the parent
Removes a file that was deleted from threes
Adds new loaders from the v69 of threes
Updates the version of threes to v69
Updates the loaders to the latest version from release 69