[ANN] twins, a Gemini server written in Go

[Sean Conner]

It was thus said that the Great colecmac at protonmail.com once stated:
> 
> >     twins includes the response body size in the media type header by default. This
> >     enables user experience improvements in Gemini clients, such as indicating
> >     download progress. It is possible to disable this feature.
> 
> For anyone wondering what that looks like:
> 
> ❯ gemget --header -o- gemini://twins.rocketnine.space/
> Info: Started gemini://twins.rocketnine.space/
> Header: 20 text/gemini; charset=utf-8; size=1128
> 
> 
> It looks like a nice server, but to be honest I would remove this.
> Serving non-standards is not what Gemini is about imo, and it's how
> the Web became what it is today. And clients in general should be
> strict and not accept things out-of-spec. For example Amfora won't
> allow non-standard status codes, even if the first digit matches a
> known code. It doesn't check for non-standard MIME params, but maybe
> it should?

  So what are the standard MIME parameters for text/plain?  text/markdown? 
text/html?  multipart/alternate?  And what should a client do when it
encounters a non-standard MIME parameter?

  -spc