New DataTypes For Ruby

Hi,

I'm Alex. I program science I was in school and I have concepts of Datatypes which I would like to have in programming language.
Ruby is My Favorite languge (10+ years of experience), Are there any recommendations how I can contribute?
What are requirements for New Datatypes?
I think to make program with API for New Datatypes + Guide how to use them.
What you would prefer to see it the Guide?
What quailities-metrics are Valuable for you?
If you have experience contributing to core Ruby libraries, what I can do to make my Commitment 10/10 ?

For Me personally it's new level of professional growth and I would like to give something back to language which I used a lot (on work and for myself).

Thank You!