Coursera Theater Mode

Coursera's default video player has relatively short maximum height, which creates a lot of dead space, and sometimes the video player could be too small to watch. This extension enables the Video Player's 'Theater Mode', which expands the width of the video to make the most of the space available. This is an opensource extension, opening an issue or PR is always welcome. https://github.com/YohYamasaki/coursera-theater-mode