Show HN: Agedit – easily edit files and encrypt them at-rest with Age

I've been looking for a way to keep something like notes or a to-do list encrypted on my computer, but still edit the files quickly without having to decrypt and re-encrypt them every time. The only solution I came across was Vim's :x, but it's well known that it uses outdated, insecure encryption. I decided I could write a shell script to do something similar with Age, hence this.