Commit with `--no-verify`

First, thanks for this great tool.

Context

In a current project, we are using a pre-commit hook to ensure that each commit builds. However, this interacts poorly with expected test failures in git-gamble. Instead of committing the code when the tests fail as expected, the pre-commit hook runs the tests again, sees them fail, and aborts the commit.

Expected Behavior

I would expect git-gamble to execute the commit with the --no-verify option, which skips commit hook execution. Perhaps this behavior should be enabled with a flag.

I'd be willing to implement this if you think it can be included in git-gamble.