This change does the following:
- Show the header on Linux/Windows when fullscreened, but not in the
player. Users might fullscreen the app when they’re not playing a video.
- Always show the header on OS X (even when fullscreened) since that’s
how the user will exit the video. We can work on adding auto-hiding to
it later.
From `main-loop`:
> main-loop is an optimization module for a virtual DOM system.
Normally you would re-create the virtual tree every time your state
changes. This is not optimum, with main-loop you will only update your
virtual tree at most once per request animation frame.
> main-loop basically gives you batching of your virtual DOM changes,
which means if you change your model multiple times it will be rendered
once asynchronously on the next request animation frame.
function references in hyperx need to look like:
```
onloadedmetadata=${onLoadedMetadata}
```
and not:
```
onloadedmetadata="${onLoadedMetadata}"
```
also removed some unnecessary `torrent.ready` checks in the player.
No header on Linux and OSX, just a back button on mouseover
ESC exits fullscreen, or if already not in fullscreen, goes back
More accurate scrub position
Removed the calc(100% -38x) hack, replaced with flexbox
As of this PR (https://github.com/substack/hyperx/pull/22) to hyperx,
attributes are automatically converted to properties for the few cases
where they’re different: class, for, and http-equiv.
