verbose: false outputs some logs

[jenni]

It seems that the verbose flag is not working for some logs or that some logs should depend on this flag. The output below is always showing:

(node:56119) [DEP0066] DeprecationWarning: OutgoingMessage.prototype._headers is deprecated
[Success] cover image downloaded successfully!
Zipping temp dir to /Users/jlijo/Documents/opensource/obooks/books/sql-pocket-guide,-4th-edition/sql-pocket-guide,-4th-edition.epub