Blacklist Spectacle for all window open/close effects
Spectacle needs to be blacklisted in order to stay out of its own screenshots. BUG: 467890 BUG: 463105 CCBUG: 465784
Spectacle needs to be blacklisted in order to stay out of its own screenshots. BUG: 467890 BUG: 463105 CCBUG: 465784
mentioned in commit b090a7cc