Implement large thumbnails support skeleton.
Continue large thumbnails support skeleton.
Update caches metrics related code.
Handle third party images formats thumbnails.
Remove attributes in "sibl_gui.components.core.iblSetsOutliner.views.Thumbnails_QListView" class.
Implement thumbnails size handling through nodes instead of model.
Update "Default_Layouts.rc" file.
Remove unused argument in "sibl_gui.libraries.freeImage.freeImage.Image.load" method.
Update "CHANGES.rst" file.
Merge branch 'feature/largeThumbnails' into develop