Aha, seems I reinvented a wheel again. But I think the simplicity might be an advantage of wu. modd seems to be too complex for someone to getting started at the first glance.
I've also been using entr but I think I like this better. Piping file names into entr doesn't make a lot of sense to me, I like the ability to use patterns.
I've downloaded it given it a shot and now realize I actually like it a lot more than entr because I don't have to have development environment instructions in my Deploy readme, I can commit the .wu.json file. :) Much better to have that in version control.