Update babel dependencies to core-js 3

[rldorado]

Hi

I'm using vue 2.6 and I'm having this dependency problem with your library when I add core-js (as babel-polyfill is deprecated, you can check it here). Here's the log:

yarn run v1.22.4
$ vue-cli-service serve
INFO Starting development server...
98% after emitting CopyPlugin

ERROR Failed to compile with 6 errors 3:17:19 PM

These dependencies were not found:

* core-js/library/fn/object/create in ./node_modules/babel-runtime/core-js/object/create.js
* core-js/library/fn/object/get-prototype-of in ./node_modules/babel-runtime/core-js/object/get-prototype-of.js
* core-js/library/fn/object/set-prototype-of in ./node_modules/babel-runtime/core-js/object/set-prototype-of.js
* core-js/library/fn/promise in ./node_modules/babel-runtime/core-js/promise.js
* core-js/library/fn/symbol in ./node_modules/babel-runtime/core-js/symbol.js
* core-js/library/fn/symbol/iterator in ./node_modules/babel-runtime/core-js/symbol/iterator.js

To install them, you can run: npm install --save core-js/library/fn/object/create core-js/library/fn/object/get-prototype-of core-js/library/fn/object/set-prototype-of core-js/library/fn/promise core-js/library/fn/symbol core-js/library/fn/symbol/iterator

I've updated your library to make it able to work with last core-js version. If you can evaluate and approve I'd be thankful as I could use your library from NPM directly.

Thank you and kind regards.

[colinscz]

@claudiocro can you have a look at this and support us on the update?

Many thanks!