Uncomment Logger.prototype.close

[iketiunn]

Closes #192 Closes #365 Closes #523

Add close method back.

Since createLogger() may create lots streams that consumes file descriptor, so you may have to close the streams in the procedure by yourself.

And yes, as the followed comment said, Typically you **don't** need to bother calling this. But it's always good to have the power control it.

[logidelic]

I'm wondering if "typically you don't need to bother calling this" is even true anyway...

In my node server, I've noticed that the log files don't get closed, even though there is no more reference to the Logger instance.

[iketiunn]

@logidelic

I don't think this repo is active anymore.

[logidelic]

It appears not, though I wonder why as it was pretty popular...