Update changelog

Author: cschembor3

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- The `gleam/http` module gains the `get_req_origin` function.
 - Fix bug to correctly set cookie `Max-Age` attribute
 - The `gleam/http.default_req` function returns a `Request(BitString)` instead
   `Request(String)`
@@ -23,7 +24,6 @@
   types, along with associated functions `empty_attributes`,
   `default_attributes`, `expire_attributes` and `set_cookie_string`.
 
-
 ## v1.1.1 - 2020-07-21
 
 - Relax dependency requirements on stdlib