6.0.0-beta.3 Release

• Adds new environments.
  • commonjs
  • shared-node-browser
• Adds reporting of unused eslint-disable comments.
• Adds better browser global support.

• Fixes sporadic eslint couldn't find the plugin errors (see eslint/eslint#3458 for more information).
• Fixes jest typo in package.json discovery which caused issues with enabling jest related rules.

v6.0.0-beta.2...v6.0.0-beta.3