Headers
Use the .set() or .headers() method to set request headers:
import { request } from "keq"
await request
.get("https://example.com/cats")
.set("Authorization", "Bearer token") // single header
.set({ "Accept": "application/json" }) // multiple headers
.headers("X-Custom-Header", "value") // .headers() is an alias for .set()
.set(new Headers({ "Cache-Control": "no-cache" })) // using a Headers object