v2.1.0-beta.2

• Breaking change: Only compatible with webpack v2.
• Breaking change: --inline is enabled by default now.
• Add compatibility for web workers (#298).
• Convert to yargs to handle command line options.
• Allow a Promise instead of a config object in the CLI (#419).
• Add --hot-only flag, a shortcut that adds webpack/hot/only-dev-server in entry in the webpack config (#439).