Could I get a review on spell-check's PR 361?

[dmoonfire]

I have a PR from May to address some issues with the lazy loading of debug for diagnostics on spell check, but I'm hesitant to merge my own code without a review. I would appreciate if someone would be willing to check atom/spell-check#361 (branch is at https://github.com/dmoonfire/spell-check/tree/refactor-lazy-debug-loading).

Mostly, it makes it so you don't have to restart Atom to turn on spell-check debugging. It also happens to fix a number of issues that were missing a variable declaration (details in comments, but specifically spell-check-manager.js:427 which appears to be trying to assign an unknown variable).

Thank you.