Had a try yesterday! Just a small thing about the mac readme, it seems to embody the wrong file for what you add after "-send".
I managed to make it work, but it could be cool to have something more helpful in terms of readme (I was personally not used at all to terminal commands like this and found it a bit unclear).
Other than that, I love the slight changes to the general interface (much more readable and contrasted). And I love the short release length! Amazing!
I only started recently with NL and it frustrated me a bit (especially when compared to LSDJ's Kill function, very handy for short and snappy notes), it's a great fix.
The ability to mute track very easily like this is great too.