Version 11.0.0

Major

• Updated Node.js support from v6+ to v8.5+.

Minor

• Support Apollo Engine client awareness, via #143.

Patch

• Updated dependencies.
• Ensure Babel helpers are imported and not inlined, using the @babel/runtime dependency and @babel/plugin-transform-runtime dev dependency.
• Nicer Browserslist syntax for supported Node.js versions.