Algernon 1.17.5

Fixes

• Fix HTML detection, ref #164 (thanks @astynax).

Security

• Add an initial Security.md file.
• Add extra sanitation / XXS protection (thanks @Bnyt7).

New features

• Add support for serving the QOI image format.

Code quality

• Simplify favicon / mimetype related code.
• Remove some unused code.

Documentation

• Add more documentation, ref #163 (thanks @myselfghost).
• Add an example for HTMX.

Performance

• Build release executables with GOEXPERIMENT=greenteagc.

Lua related

• If a single file is given as an argument, don't output the server name and version (to make Algernon more suitable for being used as a "Lua runtime", ref #163).

General

• Update CI configuration.
• Update dependencies.