io_three min blender version

http://wiki.blender.org/index.php/Dev:2.5/Py/Scripts/Guidelines/Addons

The version was previously set to 2.7 instead of 2.70 which would cause not showing a warning when the plugin is enabled for older blender versions.

Fixed several forgotten utf-8 strings in Python build script

Export parameters

Complete json roundtrip for lights

- `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

THREE.GPUParticleSystem plugin

simple JSON loader example for importing Clara.io JSON exports.

Serialize intensity

Fix a typo.

Add dispose method to all controls

SoftwareRenderer draw lines

Blender Exporter: Fixed orphaned data left over from multiple exports

RequireJs native support

fixed a bug that was causing orphaned indices when performing more than 1 export of multiple scenes from the same Blender session