Different approach to preventing userland from emitting meta events

[lukehorvat]

Fixes #97. I implemented @thetutlage's solution here.

[sindresorhus]

@lukehorvat Bump :)

[lukehorvat]

Sorry, completely forgot to follow up on this... 🤦🏻‍♂️

I pushed a commit adding a finally block to ensure canEmitMetaEvents always gets reverted to false. So I think this should be ready to go now?

[sindresorhus]

Thanks :)