bump chalk

It's a lot faster.

https://github.com/sindresorhus/chalk/releases/tag/v0.5.0
2.2.20
Expose option to override properties included on Plugin Error, copy all properties from original error by default
Merge pull request #53 from mtscout6/plugin-error-properties

Expose option to override properties included on Plugin Error, copy all properties from original error by default