bench: update benchmark results

bench/README.md

@@ -1,29 +1,29 @@
 benchmarks
 ==========
 
-**2016-04-16** Latest results, using `Node.js@4` and latest versions of modules:
+**2016-04-21** Latest results, using `Node.js@4` and latest versions of modules:
 
 * `enb@0.15.0`
 * `scan-level@0.0.4`
 
 ```
          flat level
-bem-walk x 12,090 ops/sec ±4.70% (72 runs sampled) mean 0.08 ms
-     enb x 9,829 ops/sec ±2.19% (81 runs sampled) mean 0.10 ms
-   scanl x 12,234 ops/sec ±2.59% (81 runs sampled) mean 0.08 ms
+bem-walk x 14,688 ops/sec ±2.08% (75 runs sampled) mean 0.07 ms
+     enb x 10,323 ops/sec ±1.36% (78 runs sampled) mean 0.10 ms
+   scanl x 12,016 ops/sec ±2.38% (78 runs sampled) mean 0.08 ms
 
          nested level
-bem-walk x 4,637 ops/sec ±2.05% (79 runs sampled) mean 0.22 ms
-     enb x 6,034 ops/sec ±1.82% (81 runs sampled) mean 0.17 ms
-   scanl x 4,500 ops/sec ±2.29% (76 runs sampled) mean 0.22 ms
+bem-walk x 4,042 ops/sec ±2.25% (71 runs sampled) mean 0.25 ms
+     enb x 5,682 ops/sec ±3.61% (73 runs sampled) mean 0.18 ms
+   scanl x 4,412 ops/sec ±2.63% (73 runs sampled) mean 0.23 ms
 
          bem-bl
-bem-walk x 207 ops/sec ±1.20% (79 runs sampled) mean 4.83 ms
-     enb x 147 ops/sec ±1.68% (76 runs sampled) mean 6.79 ms
-   scanl x 143 ops/sec ±1.90% (81 runs sampled) mean 7.00 ms
+bem-walk x 221 ops/sec ±3.87% (70 runs sampled) mean 4.53 ms
+     enb x 145 ops/sec ±1.77% (73 runs sampled) mean 6.92 ms
+   scanl x 131 ops/sec ±3.02% (73 runs sampled) mean 7.65 ms
 
          bem-components
-bem-walk x 132 ops/sec ±2.13% (76 runs sampled) mean 7.58 ms
-     enb x 86.25 ops/sec ±1.98% (79 runs sampled) mean 11.59 ms
-   scanl x 80.86 ops/sec ±3.02% (74 runs sampled) mean 12.37 ms
+bem-walk x 143 ops/sec ±2.46% (72 runs sampled) mean 6.99 ms
+     enb x 83.64 ops/sec ±2.53% (75 runs sampled) mean 11.96 ms
+   scanl x 66.83 ops/sec ±7.89% (62 runs sampled) mean 14.96 ms
 ```