CRX3 files fail

[sean-adams]

Describe the problem and steps to reproduce it:

Linting a .crx file that is in CRX3 (rather than CRX2) format fails.

Anything else we should know?

This stems from the package dependency on crx-parser. I've submitted a PR that fixes this issue (shyiko/node-crx-parser#2) but considering the library hasn't been published in 4 years I'm not optimistic that it'll get accepted and published.

If there's not a response from the original package maintainer, I'm considering publishing my fork to npm and making a PR to addons-linter to change the dependency, but wanted to get feedback from the addons-linter community before going that route.