Change Word count custom column from 'text' to 'int'
Changed Refresh to spinner with cancel button. Spinner now has on_top option to allow foreground windows to overlay. Removed UTF-8 BOM when sending annotations directly to custom column. Changed Refresh behavior to only selected books instead of assuming 1 selected = refresh all books.
Changed IndexLibrary to scan virtual library (performance improvement for large libraries)
Cleaned up custom column interrogation with cc wizards