Version 2.0.0

BREAKING: Drop Babel transpiling, change build file names (#156)

- dist/embetty-vue.common.js
+ dist/embetty-vue.cjs

- dist/embetty-vue.esm.js
+ dist/embetty-vue.mjs

- dist/embetty-vue.js
+ dist/embetty-vue.browser.js

-  dist/embetty-vue.min.js
+ dist/embetty-vue.browser.min.js

CSS files are left unchanged.