Originally we stopped doing links in the CHANGELOG since it harmed
readability when reading the raw markdown file. However we can use
reference styles links instead.
* Pros
- Doesn't harm readability.
- We can link to proper thread on the proper repo (`CodeBerg/nsxiv`
for newer threads, `nsxiv-record` for wiped ones)
- The links will be clickable on the [webpage]
- Both GitHub and Codeberg support reference style links, as well as
lowdown (which we use for building the webpage)
[webpage]: https://nsxiv.codeberg.page/changelog/
* Cons
- Slightly higher maintainance burden.
- Larger file size.
Reviewed-on: https://codeberg.org/nsxiv/nsxiv/pulls/325
Reviewed-by: Berke Kocaoğlu <berke.kocaoglu@metu.edu.tr>