Draft NOTES for 1.13.0

@mglukhovsky can you please review?

@danielmewes @Tryneus @mlucy @danielmewes @neumino @srh Please also take a look to make sure I haven't mis-characterized some of your fixes.
> Introduced the `on`, `once`, `removeListener` and `removeAllListeners` methods for change feeds

-- as we haven't had change feeds before, so saying we added it to feeds is weird.