Bug Fixes

• plugin mutates provided options (5be4a64)

User features

Add options.ext to specify the filename extension (defaults to .json).

Add options.json and options.onWarning from js-yaml.

Add support for file.contents being null.

Documentation

Improve README.md.

Dependencies

Remove gulp-util deprecated dependency.

Upgrade js-yaml from 3.4.3 to 3.11.0

Upgrade bufferstreams from 1.1.0 to 2.0.0

Add package-lock.json

Linting

Add linting with ESLint. It is based on Standard JavaScript.

Refactoring

Major code refactoring.