1.1.2

• Ensure both sender and receiver are cleaned upon close - #342
• Remove event listeners before calling close - #344
• Update documentation links - #351, #339, #316
• Explicitly export undefined when WebSocket does not exist. Fixes Webpack. #321
• Include dist folder on npm - #265
• Simplify build setup
• Update to Node.js 6.9
• Add sourcemap for minified version
• Remove unused String.trim shim