Support clientside certificates for HTTPS & Gemini.

Meanwhile refactor Gemini to use internationalization for its error reporting.

Switch cryptography library & implement HSTS.

Release 1.4.2.0!

Includes improved Gemini support
Switched over to OpenSSL for encryption
Optionally logs network requests to memory or disk
Supports URL rewriting extensions

Define special psuedo-MIMEtypes for error responses.

Integrate AppStream into normal fetch routines, version 1.3.0.0!

Report encountered exceptions in the response body.

Dispatch unsupported URIs to native apps on FreeDesktop.Org-compliant desktops

Improve error reporting & it's localization