v1.4.0

New Features

• Add @babel/runtime as a dependency for use via "browser" (#83)
• Support circular objects, representing circular references using YAML alias nodes when encountered during YAML.stringify() (#84)
• Deprecate the class attribute of tags, replacing it with the more generic identify(value) (#86)
• Turn the string stringifier into a generic scalar stringifier, fallback to it by default, and export it as stringify() from yaml/schema (#86)
• Add yaml-playground as a git submodule, extending ESLint rules
• Add start script, providing an interactive node env with YAML defined

Bugfixes

• Drop overeager browser polyfill generation; use playground/src/polyfill.js instead
• Add BrowserStack tests to Travis CI
• Accept arrays of tag objects as values of tags option (#90)
• Allow for blank lines after less-indented comments (#91)