feature: TLS suppprt

[0xNF]

server\sse.go hardcodes basic http support with return srv.ListenAndServe(), and there's no ability to override it to use ListenAndServeTLS. Is there a reason for this, like somewhere in the spec encouraging TLS termination to happen at an earlier stage? If not, I'd like have TLS support added.

[opencow]

I am also wondering if there's a specific reason this option is not provided