Use Puppeteer for BTR and support statically generating route index f…

…iles (#91)

* Support history api and statically generated html per route

* fs-extra

* Tweak history api btr and add unit tests

* Add support to prefix relative srcs

* revert build script

* Convert css urls based on the relative path of the built static

* fix paths in tests

* fix test

* calculate the public path for index.html's generated during BTR

* Inject base path

* Swap JSDOM for puppeteer when running BTR

* replace head with original and ensure history routing prefixed with /

* Change the plugin lifecycle to after emit so that the build doesn't complete until btr finished

* Support pupeteer options

* Use the correct puppeteer options

* Get entry name from manifest

* href to pathname and replace localhost urls in generated html

* next version of framework

intern.json

@@ -1,7 +1,7 @@
 {
 	"extends": "./node_modules/@dojo/scripts/intern/base.json",
 	"coverage": [
-		"./dist/dev/src/**/*.js"
+		"./dist/dev/src/**/*.js", "!./dist/dev/src/build-time-render/helpers.js"
 	],
 	"capabilities+": {
 		"name": "@dojo/webpack-contrib"