* Translation using MT5 translation api

Fix #36

* Add hoe to french translation

* Add toolranks support

* Update the changelog for `toolranks` support

- [mod frame](https://github.com/minetest-mods/frame)

This makes them behave similarly to default rails.

The legacy `depends.txt` and `description.txt` files are no longer
needed since Minetest 5.0.0 or later will read everything from
`mod.conf`.

This raises the minimum supported Minetest version to 5.0.0.