This watcher first traverses the provided root directory and add all sub-directories to the watcher, then if a new directory gets created, that also will be added to the watcher.

But they do not get removed and an error will raise if we try to remove a deleted directory from the watcher.

Question (for this specific package): Is it needed to explicitly remove directory from watcher in case they just got deleted? Or is it fine to just ignoring deleted directories?

Linux: Ubuntu 16.04
Go: 1.9.2