v1 release 🎉

The breaking change is the change to the API, described in the migrating guide.

• Simplify API away from .wrapPlugins (see the migrating guide)
• Add explicit support for webpack v1/v2
• Add chalk as a dependency for more terminal colour support
• Add an experimental granularLoaderData option, to give per-loader timing data
• Changed licence from ISL to MIT (both are very similar, but MIT slightly wider known)