I want to create a buttler channel with some game assets but I need to exclude a couple of files. Is this possible? Or is there a workaround you know?

I found that butler includes an "ignore" flag, just don't know how to use it at there is no documentation available :(

I have the exact same need and question. Any progress on clarifying if and how to exclude certain files from a butler push? 

I got some clarification on this here: https://github.com/itchio/butler/issues/185