v0.4.2

New features:

• Add a --skip-compatible flag to cargo upgrade (#360)

  This flag will make cargo upgrade ignore upgrades where the old
  version is semver compatible with the new one. This is useful in cases
  where you don't want to churn the Cargo.toml files in the whole project
  knowing that the lockfile is already forcing the versions to be up to date.

Other:

• Bunch of internal clean-ups