fixed - crash after closing the "difference window"
changed - "difference window" underlying code (probably no difference)
fixed - FCP XML parsing now ignores spurious multiclip clips (wilson dyer)
improved - FCP XML parsing is now much more efficient - less than half the load time compared to previous versions (wilson dyer)
added - VFX tracing now has a third option allowing much simpler and more flexible location of the version number. NOTE: this option adds a fair bit to list loading times.
