.lines returns string "0" for blank lines

[sehrgut]

A minimal case which runs on the latest master.

var Lazy = require('./lazy');
var l = new Lazy();
l.lines.forEach(function (x) { console.log(x); });
l.emit('data', 'abc\n\n');

Actual output:

<Buffer 61 62 63>
<Buffer 30>

Expected output:

<Buffer 61 62 63>
<Buffer >

[sehrgut]

Have you considered pulling this commit? The issue is still in the live version on NPM.