Public comments in Japanese

Hi Andrew and Joshue,

There are some public comments written in Japanese and sent to the
working group.

https://lists.w3.org/Archives/Public/public-agwg-comments/2017Dec/0002.html
https://lists.w3.org/Archives/Public/public-agwg-comments/2018Jan/0002.html

I can translate them into English and put them on GitHub. Please let
me know how to handle these Japanese comments.


Thanks,
Makoto