## Benchmark (Comparison with rexml 3.4.1)
```
$ benchmark-driver benchmark/parse_comment.yaml
Calculating -------------------------------------
                     rexml 3.4.1      master  3.4.1(YJIT)  master(YJIT)
           top_level     999.440      5.058k      922.416        3.340k i/s -     100.000 times in 0.100056s 0.019770s 0.108411s 0.029936s
          in_doctype      1.063k      4.890k      980.498        3.341k i/s -     100.000 times in 0.094116s 0.020449s 0.101989s 0.029927s
       after_doctype     638.321      1.304k      603.952        1.153k i/s -     100.000 times in 0.156661s 0.076710s 0.165576s 0.086748s

Comparison:
                        top_level
              master:      5058.2 i/s
        master(YJIT):      3340.5 i/s - 1.51x  slower
         rexml 3.4.1:       999.4 i/s - 5.06x  slower
         3.4.1(YJIT):       922.4 i/s - 5.48x  slower

                       in_doctype
              master:      4890.2 i/s
        master(YJIT):      3341.5 i/s - 1.46x  slower
         rexml 3.4.1:      1062.5 i/s - 4.60x  slower
         3.4.1(YJIT):       980.5 i/s - 4.99x  slower

                    after_doctype
              master:      1303.6 i/s
        master(YJIT):      1152.8 i/s - 1.13x  slower
         rexml 3.4.1:       638.3 i/s - 2.04x  slower
         3.4.1(YJIT):       604.0 i/s - 2.16x  slower
```

- YJIT=ON : 1.90x - 3.62x faster
- YJIT=OFF : 2.04x - 5.06x faster