Webpack 2, RC 4

Node.js dropped support for 0.12, so we do.

• Using CommonJS or AMD export stuff in a ES2015 module will emit errors.

• performance hints are off by default. It was too annoying, but you can still see the [big] flag by default.

• webpack now exits with non-zero exit code when configuration Promise is rejected.

• ProvidePlugin supports passing array to access members of a module
• renamed NoErrorsPlugin to NoEmitOnErrorsPlugin, NoErrorsPlugin is still working but is deprecated

• Migrated many internal classes to ES2015
• improved tests, linting and CI
• added testcases for CLI

This is probably the last RC. We released it as final test.
If no critial bugs are discovered, we release 2.2.0 in < 10 days.