Features

• add splitChunks.automaticNameDelimiter to configure the name separator for automatic names
• stats.excludeModules now also accept booleans
• webpack throws an error when trying to run in twice at a time
• performance is disabled by default in non-web targets
• AMD parser plugins can now be extended by inheriting

Bugfixes

• Fix a race condition when writing events.json in ProfilingPlugin
• HMR runtime code is reverted to ES5 style
• script timeout is not correctly in seconds
• reexporting JSON exports works correctly now
• fix a bug when combining ProfilingPlugin with SourceMapDevToolPlugin
• add a missing semicolon to the runtime code