Sleipnir v0.1.6

Version 0.1.6

A small, sharp update this time!

Sleipnir has always been able to gzip responses. But in our stack, the proxy out front already compresses everything on the way to the visitor, so doing it again at the origin was just burning CPU to compress bytes that were about to be compressed anyway.

So we flipped it: gzip is now off by default.

Now the frontend proxy will use the superior compression zstd for every website.