Pass all paths from event to command ({path} currently replaced by a single path)

[sbleon]

The custom command currently only gets a single path when multiple files were changed:

$ node_modules/.bin/chokidar '**/*' -d 0 -c 'echo {path}' &
Watching "**/*" ..
$ touch foo bar baz
File added: foo
File added: bar
File added: baz
baz

I'm not sure if this is a bug or a feature.

If it's a feature

I'd like to see either of these changes:

1. {path} gets replaced with all of the event's file paths. This could break things for existing users.
2. {paths} is a new placeholder that gets replaced with all of the event's file paths. This complicates the API.

Any thoughts on which way might be preferable?

If it's a bug

This might be happening because the code is creating a debounced version of the custom command even if the debounce option is set to zero. And/or there might be a similar problem with the throttling. I think it would be simple enough to avoid using those lodash functions if the relevant options are set to zero.