Use 0,0 for default instance
Some initial work for stateful Print object
Move centering outside the Print object
Some initial work for adapting plater to the new centering workflow
Finished updating plater to the new centering logic
More work for updating the embedded Print object when Model is changed in plater
More refactoring to clean up the Print object API
Removed extra line
Handle read_from_file() exceptions in GUI. #1619
Lazy mesh generation so that we only keep it in model object
Fix compilation and test suite
Completed adapting plater behavior to new Print object API
New option for turning autocentering off. #404
Merge branch 'xs-model'