jsPsych: Enabling an Open-Source Collaborative Ecosystem of Behavioral Experiments

Minor Changes

• #3707 f14e9784fd49f36ac9051c6d5cdbd7223f391a9b Thanks @jodeleeuw! - The keyDown() and keyUp() helpers accept an optional second argument that sets the code property (the physical key) on the dispatched KeyboardEvent, in addition to the existing key argument. A new windowBlur() helper dispatches a blur event on window and flushes pending promises, for testing behavior that depends on the page losing focus.