Log Message:
tealdeer: update to 1.5.0.

v1.5.0 (2021-12-31)

This is quite a big release with many new features. In the 15 months since the
last release, 59 pull requests from 16 different contributors were merged!

The highlights:

- Custom pages and patches: You can now create your own local-only tldr
  pages. But not just that, you can also extend existing upstream pages with
  your own examples.
- Change argument parsing from docopt to clap: We replaced docopt.rs as
  argument parsing library with clap v3, resulting in almost 1 MiB smaller
  binaries and a 22% speed increase when rendering a tldr page.
- Multi-language support: You can now override the language with -L/--language.
- A new `--show-paths` command: By running tldr --show-paths, you can list
  the currently used config dir, cache dir, upstream pages dir and custom pages dir.
- Compliance with the tldr client spec v1.5: We renamed -o/--os to
  -p/--platform and implemented transparent lowercasing of the page names.
- Docs: The README based documentation has reached its limits. There are
  now new mdbook based docs over at https://dbrgn.github.io/tealdeer/, we hope
  these make using tealdeer easier. Of course, documentation improvements are
  welcome! Also, if you're confused about how to use a certain feature, feel free
  to open an issue, this way we can improve the docs.