Support extracting chunk manifest

Support extracting chunk manifest

TL;DR

• Forked chunk-manifest-webpack-plugin and removed overlaps. inline-chunk-manifest-html-webpack-plugin now extracts chunk manifest.
• Major version bump as an effect of dropping webpack 1 support. Now only supports webpack 2 and 3.
• API wise no updates, configuration of inline-chunk-manifest-html-webpack-plugin remains the same.

Background

Upgrades of inline-chunk-manifest-html-webpack-plugin have up until now been prevented by a long-running issue in the dependency plugin chunk-manifest-webpack-plugin (soundcloud/chunk-manifest-webpack-plugin#47). This in turn had the indirect effect of preventing users from upgrading to webpack 3. To enable independent updates of the plugin, chunk-manifest-webpack-plugin is forked and included in the plugin.

Updates

• chunk-manifest-webpack-plugin is forked and included into inline-chunk-manifest-html-webpack-plugin.
• Overlapping functionality with previous dependency plugin removed.
• Removed adding chunk manifest to chunks (soundcloud/chunk-manifest-webpack-plugin#47).
• Dropped webpack 1 support, and therefor major version bumped inline-chunk-manifest-html-webpack-plugin. There were code in the forked plugin that enabled backwards compatibility. However, as webpack 1 is deprecated, code for backwards compatibility was removed.
• No configuration changes are required when consuming the plugin.