chore(release): 9.0.0 [skip ci]

# [9.0.0](https://github.com/harttle/liquidjs/compare/v8.5.3...v9.0.0) (2019-08-26)

### Bug Fixes

* break/continue omitting output before them, [#123](https://github.com/harttle/liquidjs/issues/123) ([ae45c46](https://github.com/harttle/liquidjs/commit/ae45c46))
* reactjs demo during yarn install, fixes [#145](https://github.com/harttle/liquidjs/issues/145) ([b65df44](https://github.com/harttle/liquidjs/commit/b65df44))

### Code Refactoring

* return value of Tag#render is no longer used ([8028f82](https://github.com/harttle/liquidjs/commit/8028f82))

### Features

* renderSync, parseAndRenderSync and renderFileSync, see [#48](https://github.com/harttle/liquidjs/issues/48) ([7fb01ad](https://github.com/harttle/liquidjs/commit/7fb01ad))

### Performance Improvements

* target to es6, fixes [#137](https://github.com/harttle/liquidjs/issues/137) ([3b9fc7e](https://github.com/harttle/liquidjs/commit/3b9fc7e))

### BREAKING CHANGES

* Tag#render now returns void, use emitter argument
to write rendered html.
* ship to Node.js 8, the dist/liquid.cjs.js (main) nolonger
supports Node.js 6, other bundles are also provided via dist/liquid.esm.js, dist/liquid.js (ES5 umd) and liquid.min.js (minified ES5 umd)
* remove default export, now should be used like import
{Liquid} from 'liquidjs'

package.json

@@ -1,6 +1,6 @@
 {
   "name": "liquidjs",
-  "version": "8.5.3",
+  "version": "9.0.0",
   "description": "Liquid template engine by pure JavaScript: compatible to shopify, easy to extend.",
   "main": "dist/liquid.cjs.js",
   "es2015": "dist/liquid.esm.js",