Hi everyone, I'm just getting started with ring and I'm concerned about case-sensitivity of HTTP headers. Obviously in HTTP, header names are case-insensitive but clojure map keys are case-sensitive which doesn't play nice with this. I can see that in an incoming request (using httpkit), all the keys are lower case. Do we have a convention that all ring middleware and handlers only ever use lower-case headers, or are there special rules I need to abide by make sure I process headers in a case-insensitive way?