1.8.227

Faster Unsaved Changes

Use a single application global boolean to flag when the project has
been modified. This replaces the per resource boolean, without
sacrificing the improved accuracy over GM of whether the project
actually changed. Checking for unsaved changes at close is now only a
linear scan over the open frames, and not every resource in the project.
Creation of groups and deletion of resources is also now additionally
recognized by the check.