v1.3.0

Features

• Change environment map from SketchUp "Extensions" menu.
  Tip : Changing environment map changes ambient light map.
• Metallic & Roughness maps are separated in Material Editor.
• Access online help document translated in FR from Viewport.

Bugfixes

• Fixes pan (middle button) control issue in Viewport on Firefox.
• Fixes a little gamepad control bug. Improves maybe performance.