Implement various unicode related changes.
Update "inspector" component preview handling.
Update various docstrings.
Update documentation / help files.
Raise package release version number to "4.0.7".
Update documentation / help files images.
Implement thumbnails type switch mechanism in "iblSetsOutliner" component.
Implement proper linear conversion in "iblSetsOutliner" thumbnails switch mechanism.
Update "about" component.
Update "sibl_gui.launcher" module.
Store "iblSetsOutliner" component panoramic thumbnails state in settings.
Remove unused imports.
Add "004_migrate_4-x-x_to_4-0-7" patch module.
Update "sibl_gui.common.getThumbnailPath" and "sibl_gui.common.extractThumbnail" definitions signatures.
Update documentation / help files and various utilities.
Update "windowsSetup" module utility.
Update various docstrings.
Code formatting.
Update documentation / help files.
Update "CHANGES.rst" file.