[Feature request] Botan SSL implementation

[Dadoum]

It has briefly been discussed here a while ago, but I bring back the idea.

The thing is that vibe-d is quite big, and I would like to avoid having to use openssl. OpenSSL is hard to bundle with my D app, and this project already allowed me to remove the libcurl dependency my project had.

I tried to implement it, but I really don't know anything about SSL and TLS.

Thanks for your project and your time.