This will automatically do a github release with the correct changelog entry and the built zip file.
If a publish is made with `--tag next` it will mark the release as a pre-release.
To use, just add `VJS_GITHUB_USER` and `VJS_GITHUB_TOKEN` env variables as part of the publish command:
```sh
$ VJS_GITHUB_USER=gkatsev VJS_GITHUB_TOKEN=test_token npm publish --tag next
```
In 6.0, we changed the way that Menu Buttons were being created by
wrapping an actual button with a menu sibling in a container. The
playback rate menu also had a rate value display. In 6.x, this rate
value display ended up coming on top of the button itself and capturing
it's clicks. So, we want to remove pointer-events from the rate-value
display and resize the actual button to be the size of the control.
We added a feature so that remote text tracks can auto-removed when a source changes. However, in 6.x we changed the source behavior to be asynchronous meaning that some text tracks were accidentally being removed when they weren't supposed to be.
For example:
```js
var player = videojs('my-player');
player.src({src: 'video.mp4', type: 'video/mp4'});
// set second arg to false so that they get auto-removed on source change
player.addRemoteTextTrack({kind: 'captions', src: 'text.vtt', srclang: 'en'}, false);
```
Now when the player loads, this captions track is actually missing because it was removed.
Instead of adding auto-removal tracks immediately to the list, wait until we've selected a source before adding them in.
Fixes#4403 and #4315.
player.duration() currently returns 0 if the duration is not known, when it should return NaN. The problem is that if NaN is passed to player.duration() as an argument, we set the duration to 0. If player.cache_.duration was set to NaN by other means, player.duration() would still return 0.
Modify the player duration() method so that it will 1.) set the cached duration to NaN if it is passed in as an argument, and 2.) return the proper value when called without an argument.
When picture-in-picture mode is entered on Safari, `webkitbeginfullscreen` is triggered which results in a proxied `fullscreenchange` event and adding the fullscreen class to the player. That causes the tech element to collapse to zero height so that the "this video is playing in picture in picture" placeholder is not visible.
On `webkitbeginfullscreen` check whether the presentation mode is `picture-in-picture` before proxying `fullscreenchange` event.
These are a few performance improvements.
* Use textContent instead of innerHTML for text content.
* Construct TextTrackSettings content with HTML strings where possible because it's a bit faster than manual DOM construction.
* Do minimal DOM updates to time controls. This reduces our timeupdate footprint from ~2-2.5ms to ~1ms!
Video.js players can accept a number of standard <video> element options (autoplay, muted, loop, etc), but not currently playsinline, which is now part of the [HTML spec](https://html.spec.whatwg.org/multipage/embedded-content.html#attr-video-playsinline). We should add it to the list of <video> attributes that can be provided to the player as options.
