Removes spoilers from Twitch.tv VODs.
・Hides references to VOD durations on videos/playback pages, and replaces the scrubber with relative time controls (e.g. -30 seconds/+15 minutes)
・Click the extension's icon to toggle spoilers on/off on a per-channel basis
・Open source: https://github.com/ky-is/twitch-vod-unspoiler
Note you can check the video's current time by clicking the playback Settings icon.