mousePause option is backwards

[ephrata]

To work around the bug in the play/pause code, I decided to try the mousePause option instead.

I set 'mousePause: true' but it didn't seem to work. So I gave up and set mousePause back to false

Later I noticed that mousePause was actually working – but it was set to false.

The code (and code comment) reads:
mousePause: true // set to true to stop animation on mouse hover

So a value of 'true' should enable the feature, but confusingly, the feature is only enabled if the value is false