Upgrading packages in Cargo.toml

I wanted to upgrade all packages listed in my `Cargo.toml`-file. Cargo has a command to update all packages in `Cargo.lock` (`cargo update`), but this leaves the `Cargo.toml` file untouched.

Weird that this functionality is not included in the standard Cargo commands. But I found a `cargo-edit` on github:

https://github.com/killercup/cargo-edit

.

It is easily installed with on command:

Now you can simply run `cargo upgrade` to change all versions mentioned in you `Cargo.toml` file to the lastest version.