Fireworm broadcasts events twice

fwtest.js

var fireworm = require('fireworm')
var path = require('path')
var fs = require('fs')

var mkdirSync = function (path) {
  try {
    fs.mkdirSync(path);
  } catch(e) {
    if ( e.code != 'EEXIST' ) throw e;
  }
}

var dir = path.join(process.env.HOME, 'testfw')
mkdirSync(dir)
var fw = fireworm(dir);

fw.add('**/new.file')

fw
      .on('add', function(fp){
        console.log('added', fp)
      })
      .on('remove', function(fp) {
        console.log('removed', fp)
      })

setTimeout(function() {
  var newdir = path.join(dir, '1')
  mkdirSync(newdir)
  fs.writeFileSync(path.join(newdir, 'new.file'))
}, 1000)

setTimeout(function() {
  var newdir = path.join(dir, '2')
  mkdirSync(newdir)
  fs.writeFileSync(path.join(newdir, 'new.file'))
}, 2000)

/*
mc@ubuntu:~/fw$ node fwtest.js
added /home/mc/testfw/1/new.file
added /home/mc/testfw/2/new.file
^C
mc@ubuntu:~/fw$ node fwtest.js
added /home/mc/testfw/1/new.file
added /home/mc/testfw/2/new.file
added /home/mc/testfw/1/new.file
added /home/mc/testfw/2/new.file


mc@ubuntu:~/fw$ node -v
v5.0.0
mc@ubuntu:~/fw$ npm -v
3.3.6
mc@ubuntu:~/fw$ uname -a
Linux ubuntu 4.2.0-17-generic #21-Ubuntu SMP Fri Oct 23 19:56:16 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux


*/