slightly more comprehensive benchmarks (for take and bench)

- add native version
- add manual hand-rolled version
- run across a broader distribution of inputs.


someone should review as benchmarks are always mega trolling, but hand-rolled isn't that much faster then transducers. (in this case)

output

```sh
npm version                                                                                                                                                                                      !10021
{ http_parser: '2.3',
  node: '0.11.14',
  v8: '3.26.33',
  uv: '1.0.0',
  zlib: '1.2.3',
  modules: '14',
  openssl: '1.0.1i',
  npm: '2.0.0',
  'transducers.js': '0.2.0' }
```

lodash master (as it has lazy support that isn't released yet)

```sh
 (n=1) hand-rolled baseline x 3,104,227 ops/sec ±5.34% (79 runs sampled)
 (n=1) native x 504,005 ops/sec ±7.77% (70 runs sampled)
 (n=1) _.map/filter x 362,008 ops/sec ±10.59% (70 runs sampled)
 (n=1) t.map/filter+transduce x 1,022,069 ops/sec ±7.60% (74 runs sampled)

 (n=2) hand-rolled baseline x 3,202,279 ops/sec ±4.14% (85 runs sampled)
 (n=2) native x 505,865 ops/sec ±4.54% (76 runs sampled)
 (n=2) _.map/filter x 415,780 ops/sec ±4.01% (80 runs sampled)
 (n=2) t.map/filter+transduce x 1,114,734 ops/sec ±3.74% (82 runs sampled)

 (n=10) hand-rolled baseline x 2,642,734 ops/sec ±5.40% (79 runs sampled)
 (n=10) native x 296,594 ops/sec ±6.06% (71 runs sampled)
 (n=10) _.map/filter x 332,943 ops/sec ±6.15% (76 runs sampled)
 (n=10) t.map/filter+transduce x 969,149 ops/sec ±7.39% (76 runs sampled)

 (n=50) hand-rolled baseline x 816,477 ops/sec ±4.43% (82 runs sampled)
 (n=50) native x 99,406 ops/sec ±4.96% (79 runs sampled)
 (n=50) _.map/filter x 218,778 ops/sec ±3.68% (85 runs sampled)
 (n=50) t.map/filter+transduce x 671,534 ops/sec ±3.53% (84 runs sampled)

 (n=100) hand-rolled baseline x 572,488 ops/sec ±4.45% (81 runs sampled)
 (n=100) native x 56,239 ops/sec ±3.62% (79 runs sampled)
 (n=100) _.map/filter x 139,856 ops/sec ±5.43% (78 runs sampled)
 (n=100) t.map/filter+transduce x 426,086 ops/sec ±4.14% (81 runs sampled)

 (n=1000) hand-rolled baseline x 564,258 ops/sec ±3.82% (83 runs sampled)
 (n=1000) native x 6,173 ops/sec ±4.23% (80 runs sampled)
 (n=1000) _.map/filter x 143,803 ops/sec ±3.56% (82 runs sampled)
 (n=1000) t.map/filter+transduce x 408,646 ops/sec ±3.56% (79 runs sampled)

 (n=10000) hand-rolled baseline x 569,765 ops/sec ±3.23% (80 runs sampled)
 (n=10000) native x 641 ops/sec ±3.85% (80 runs sampled)
 (n=10000) _.map/filter x 141,814 ops/sec ±3.71% (84 runs sampled)
 (n=10000) t.map/filter+transduce x 423,888 ops/sec ±3.85% (82 runs sampled)

 (n=100000) hand-rolled baseline x 2,196,801 ops/sec ±3.47% (79 runs sampled)
 (n=100000) native x 47.06 ops/sec ±4.48% (51 runs sampled)
 (n=100000) _.map/filter x 136,975 ops/sec ±4.23% (80 runs sampled)
 (n=100000) t.map/filter+transduce x 410,112 ops/sec ±4.12% (81 runs sampled)
```