Fix options.method being undefined in normalized options

[kleinfreund]

Fix options.method (where options has the NormalizedOptions type) being undefined when no method is provided.

Fixes #670.

[kleinfreund]

I'm aware that commits are expected to be squashed; however, I wanted to keep a clean git history while the pull request is under review. I'm happy to squash commits once that's completed.

[sholladay]

We squash the PR during merge, so the commit messages in the PR will be combined to a bulleted list in a single commit on the main branch. Up to you whether or not you want to clean up the PR commits before the merge or not. But strictly speaking, there's no need to do your own squash unless you want to.

[kleinfreund]

Thanks, I squashed them now as I had used a bit of a different commit message style in the last two commits out of habit.