Could you add an entry for HE?

[allen7643]

I've reviewed your code, and it's quite simply just added an entry for HE. Could you pls kindly do that? I've succeeded with manually setup, I think it would be good you can also integrated it into your project.
Thanks!

Hurricane Electric (https://dns.he.net/) doesn't have an API so just set your login credentials like so:
export HE_Username="yourusername"
export HE_Password="password"
Then you can issue your certificate:

acme.sh --issue --dns dns_he -d example.com -d www.example.com