From 8e2f5f5d2da810485c312f48770ff53a3bb8231e Mon Sep 17 00:00:00 2001
From: Sebastian Thiel <sebastian.thiel@icloud.com>
Date: Wed, 7 Jun 2023 13:26:21 +0200
Subject: [PATCH] feat: add `File::by_key()` and `by_key_mut()`.

With these proxies it's possible to pass a key that is more natural
to many users, like `section.key` or `section.sub.key` while retaining
acccess to typical getters and setters.