Add SceneCanvas.screenshot method
Added new screenshot method; renamed old screenshot => export
bugfixes
Some reorganization and new example
Reverted read_pixels change, fixed example
numerous fixes
Test resolution change in export example
Cleaned up SceneCanvas methods a bit
docstring update
flakify
Renamed SceneCanvas.export => .render
Example corrections for unit testing
Fix Image visual warning for non-contiguous data
Docstring updates
Added example descriptions
Docstring update
Add some scene maodules to documentation
More docstring updates
yet more docstring updates
yet even more docstring fixes
minor correction