- `version` on its own displays the current version
- `version --bump patch` bumps the patch version
- `version --bump minor` bumps the minor version
- `version --bump major` bumps the major version
- `version 1.2.3` bumps the version directly (existing behaviour)
All flavours of version bump displays a string in the form:
`Bumping version 1.2.3 to 4.5.6`
10f5a42fd7