Program break and check the "high coverage only"

[hans49732563]

Thanks for your great program. It makes me relaxed.

Program sometimes breaks when click "next". I guess the page is not loaded yet. So I add "time.sleep(2)" in "def go_to_next_page" to solve this problem.

Suggest: add a option to check "high coverage only" and select host "human". That will be helpful for us. Thanks.