[Feature] Add Logging

[JySzE]

Please add a logging parameter --logging -log .

Example:

--logging OUTPUT, -log OUTPUT
                        Destination path of log. If OUTPUT isn't specified, it will be the current path.

Helpful when doing large batches to easily search for any errors warnings etc.

You could just have its default log name be something like:

<SYSTEMStartTime>_log.txt

Or something like that it really doesn't matter too much, Or just require the user to declare filename in OUTPUT with DIR.

Thanks!

[moi15moi]

@JySzE Does #54 suits your need?

[JySzE]

Works absolutely perfectly after last push, thank you.