chore: v0.3.0 release candidate 2

[elsirion]

I manually edited flakebox.nix manually and ran:

cargo workspaces version --exact --no-git-commit --yes --force '*' --pre-id rc prerelease

[dpc]

I manually edited flakebox.nix manually and ran:

Wouldn't you want it as a just command?

[elsirion]

I manually edited flakebox.nix manually and ran:

Wouldn't you want it as a just command?

I was thinking about that, now that we don't need to edit the flakebox.nix file anymore after you made it follow Cargo.toml it might just be the cargo workspaces command I posted. We'd just need to leave out the last argument that specifies the version to bump (because that will differ).