Suggest to add some other sites

[Ahasun]

Hy,first of all millions of thanks for this awesome extension.
But you didn't add some other popular site to this tension. Hope you'll add as early as possible.
Here is the missing sites list:

1. https://atcoder.jp/
2. https://csacademy.com/

And also suggest to add an option to separate long and short contest

Thanks in advance :)