Issue title: The performance tests are broken.
 Issue body: When I run the performance tests it fails.

```shell
EventEmitter2 git:(master) ✗ ./node_modules/.bin/nodeunit test/perf/benchmark.js 
EventEmitterHeatUp x 4,246,065 ops/sec ±0.28% (94 runs sampled)
EventEmitter x 4,099,899 ops/sec ±1.57% (92 runs sampled)
EventEmitter2 x 14,586,093 ops/sec ±1.01% (93 runs sampled)
EventEmitter2 (wild) x 11,040,898 ops/sec ±0.74% (89 runs sampled)

/home/agirorn/code-open/EventEmitter2/test/perf/benchmark.js:50
    console.log('\nFastest is ' + this.filter('fastest').pluck('name'));
                                                         ^
TypeError: this.filter(...).pluck is not a function
    at Suite.<anonymous> (/home/agirorn/code-open/EventEmitter2/test/perf/benchmark.js:50:58)
    at /home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:1215:40
    at arrayEach (/home/agirorn/code-open/EventEmitter2/node_modules/lodash/lodash.js:537:11)
    at Function.forEach (/home/agirorn/code-open/EventEmitter2/node_modules/lodash/lodash.js:9359:14)
    at Suite.emit (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:1214:11)
    at Suite.onComplete (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:1186:17)
    at getNext (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:900:30)
    at execute (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:862:26)
    at invoke (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:970:20)
    at Suite.runSuite [as run] (/home/agirorn/code-open/EventEmitter2/node_modules/benchmark/benchmark.js:1169:7)
    at Object.<anonymous> (/home/agirorn/code-open/EventEmitter2/test/perf/benchmark.js:53:4)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
```
 Comments: 
 Comment 0: I haven't had much time to do maintenance, and this looks like a library version problem. A pr to fix this would be very much appreciated!
 Comment 1: just replace `pluck` with `map`

before:
`this.filter('fastest').pluck('name')`
after:
`this.filter('fastest').map('name')`
 Comment 2: @evilive3000 Would you mind testing it out and submitting a PR?
{'source': 'GithubIssues', 'repo_name_with_owner': 'asyncly/EventEmitter2', 'issue_id': 284176320, 'repo_stars': 1197.0}