KeyframeTrack.trim( start, end ).  Return this if possible.  Use fps in ObjectLoader.  Add KeyframeTrack.scale()

- `AreaLight`: Add to the `ObjectLoader`.

- `DirectionalLight`, `HemisphereLight`, `SpotLight`: Update matrix in
constructor. These lights are not create at origin. The default
constructed Matrix4 is the identity matrix and is out of sync with the
actual position.

- Unit tests

Add more geometries to ObjectLoader.js and pass down missing parameters
to constructors for `CircleGeometry` and `CylinderGeometry`.

eg. / e.g.
vertice / vertex
fullframe / full-frame
todo / TODO
unreckognized / unrecognized
ontop / in front
initialise / initialize
unforms / uniforms
overriden / overridden
interpolatation / interpolation
subsurve / sub-curve
Catmull-rom / Catmull-Rom
consruct / construct
colinear / collinear
perpenicular / perpendicular
minimim / minimum
segements / segments
speficied / specified
compatable / compatible
egde / edge
initalization / initialization
shiftet / shifted
childrens' / children's
ambigious / ambiguous
barycoordinates / barycentric coordinates
equi distance / equidistant
equidistance / equidistant
ist / is

And remove one `console.log`

Sorry @elephantatwork, I think this logic should be outside.

Added texture and image export to the Object3D.js. Works with the scene
export inside the editor.

Extended the .toJson() to safe the texture inside the .json file as a
base64 format.

Big images >2048 are converted to jpg with to keep the size smaller.
For others you can still use the alpha channel of pigs.

Previously, Three.JS would IGNORE imported castShadow and receiveShadow settings on objects. This setting is now corrected.

ambientOcclusion -> ao per @WestLangley feedback here: https://github.com/mrdoob/three.js/pull/6263#issuecomment-83794671 #2

A very small change that allows text geometry to be loaded with the scene.  Here is an example: http://datable.net/WebGL/HW3/

add Line.mode for deserialize THREE.Line objects