Option to turn "Command exited with 0" back on

[kpcyrd]

I think this was present in older version of cargo-watch, and I noticed it's still present in watchexec that it shows some text after the child terminated.

The latest version of cargo-watch doesn't do this by default and I couldn't figure out how to turn it back on. Without this text it's difficult to tell from the output if the command completed or hangs. :)

Thanks!

[passcod]

Specifically this was disabled when using a trailing command due to bugs (#203), but still exists elsewhere. Watchexec has a different mechanism for it so it still works there for all argument styles