* expand browsers target * add eslint-plugin-compat * sort polyfils * adjust readme * add polyfills sync check action * only build js * trim * add Element.prototype.closest * add closest to demo links * fix ignore
* Upgrade Webpack to v4 * Upgrade Mocha * Export unminfied and minified version * Add browserslistrc * Remove core.js polyfills * Run bundle size on pre push * Run bundlesize last * Update readme gzip side