As a jQuery user, I link the remote library from Google using
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
which is very clever because it's already loaded in the brower cache if the reader visited another site that did the same.
As I discover Phaser, I was hoping to see people on the web doing the same with
<script src="https://raw.githubusercontent.com/photonstorm/phaser/master/build/phaser.min.js"></script>
or any library hoster, but apparently no one does.
Is there a reason why Phaser users don't do that?