after tried syck, going to try jvyamlb

These days, I've tried to start with porting MRI YAML test to RbYAML.
I used to think that will be just few differences between them. But finally, I found it's really hard to make tests pass by simple modification.
There's no parser interface like MRI currently, they were designed in a different structure.
After talking with my mentors, I suggested to have a look at jvyamlb which is the YAML lib in JRuby. Because it's more similar to RbYAML.

After these days experiment, I think that I should have a deeper comprehension for MRI YAML(syck) and rbyaml structure first.