Lock extract-opts version

[johnthepink]

extract-opts updated earlier today to 3.1.0: https://github.com/bevry/extract-opts/releases/tag/v3.1.0

Because of this, I was getting this error: ReferenceError: Symbol is not defined

This PR locks extract-opts at 3.0.1

[balupton]

Thanks. It seems CSON is the only project left that I have which has users on node 0.10. Will see what is the right path forward latee today. Out of curiosity, why are you still on node 0.10? It is years old now and very slow.

[johnthepink]

I'm using it in conjunction with a Meteor project, which unfortunately still requires 0.10.40. They have plans to upgrade soon, but who knows.

Feel free to close if it's not the right direction for the project. We are maintaining a fork for the time being. Thanks!

[balupton]

Yeah will close. Will just update the relevant projects to run on node 0.10.

Which meteor project is it? Maybe I can add my 2 cents to the initiative.