--extensions flag being ignored

[fakenickels]

Thanks for the this lib! I'm using it quite a lot to accomplish a bucklescript-monorepo like setup, I have some projects running just fine with it but here rescriptbr/reform#177 I'm getting a weird loop behavior.

I'm running it like this ./node_modules/.bin/redemon --paths=$(BSDIRS) --verbose -e re $(MAKE) bs

After enabling verbose I saw it was watching files from within lib/bs which are touched by BS in every build, with that it was causing an infinite loop of changed -> rerun -> changed -> rerun. I'm trying to investigate but I couldn't figure it out yet.