About this extension
SuperStop is very simple: it adds a Shift+Esc shortcut (configurable) that stops active WebSocket connections, JS timers, XMLHttpRequests, and any animated images, regardless of the state of the Firefox Stop button.
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WebExtension rewrite, for Firefox 57 compatibility. Two new features appeared in the process:
* the addon now also stops JS timers (can be turned off)
* the shortcut was made configurable