• New multiple viewports feature. You can now split the viewport in a 2x1,1x2 and 2x2 grid (can be enabled from the menu View -> Viewports, or setting viewer.viewport_mode to "single", "split_v", "split_h" or "split_vh"), each viewport has its own camera and can be controlled independently, there are also camera presets for orthographic views from each of the main axis.
• New camera modes for trackball and first-person controls. (can be enabled from the menu Camera -> Control Modes, or setting the property viewer.camera.control_mode to "turntable", "trackball" and "first_person").
• Added camera trackball visualization (can be toggled from the menu Camera -> Show Trackball or by pressing B).
• Added new Lines2D renderable for drawing thin 2D lines.
• Added shadows on meshes with normal coloring enabled.
• Lights are now hidden by default, but can be shown checking the Show light property of the light in the Editor window, the light 3D model was also updated.

Bug fixes:

• Fixed artifacts when rendering objects with transparency in vertex colors or face colors, and with backface culling disabled.
• Fixed bug that broke the Plane renderable.
• Fixed a memory leak on window resize.

What's Changed

• Pull request in preparation for 1.10 release by @ramenguy99 in #31

Full Changelog: v1.9.0...v1.10.0