V0.1 - The first light

First working and usable implementation of 👧 gurl.

Features:

• Tries not to crash, but gracefully crash when unexpected things happen
• Can use trust anchor from PEM certificate chain 👍 or ignore certificates all together and just accept everything 😱
• Does not handle redirections (and thus: does not run into infinite redirection loops 🙌)
• Prevents files with non-text/*-mime to be printed to stdout without enforcing this
• Can actually download files via gemini protocol