Just a quick note related to this PR, the version test on the comma package in nixpkgs fails because the version was not updated in Cargo.toml
Output of nix -vL build --no-link nixpkgs#comma.tests.version
```
this derivation will be built:
/nix/store/y46aa66i8xdvdg5zdzkzm04x5anjg9lc-comma-1.3.0-test-version.drv
building '/nix/store/y46aa66i8xdvdg5zdzkzm04x5anjg9lc-comma-1.3.0-test-version.drv'...
comma> Version string '1.3.0' not found!
comma> The output was:
comma> comma 1.2.3
error: builder for '/nix/store/y46aa66i8xdvdg5zdzkzm04x5anjg9lc-comma-1.3.0-test-version.drv' failed with exit code 1;
last 3 log lines:
> Version string '1.3.0' not found!
> The output was:
> comma 1.2.3
For full logs, run 'nix log /nix/store/y46aa66i8xdvdg5zdzkzm04x5anjg9lc-comma-1.3.0-test-version.drv'.
```
This PR updates the version in Cargo.toml to 1.3.0, which will also ensure
, --version
gives the correct output