Previously, when autoplay was set to any or muted, we would accidentally swallow the autoplay rejection when we reset the muted state back to what it was. Instead, we want to re-throw the error.
To get it working, we also had to update our tests to try/catch in our fake promise.
This PR adds a new option to treat autoplay: true the same as autoplay: 'play'. In general we want video.js to handle as much of the autoplay logic itself as possible, since the browser's treatment of the video element's autoplay attribute is less predictable. For now the default option value is false, but it may be made the default behavior in a future major version.
This PR extends the `autoplay` to the player with a few options that should hopefully make working with browsers that disable unmuted autoplay by default easier.
The current boolean option will match current behavior and any unknown option will be treated as it does now. The new options are the string values `muted`, `play`, and `any`.
- `muted` will mute the element and call `play()` on `loadstart`,
- `play` will call `play()` on `loadstart()`, this is similar to the `autoplay` attribute
- `any` will call `play()` on `loadstart()` but if it fails it will try muting the video and calling `play()` again.
