add "@babel/plugin-proposal-object-rest-spread" plugin

[baryon]

if not this plugin "@babel/plugin-proposal-object-rest-spread", a error will raised in some env like

    return this.fetch(url, { ...options,
                             ^^^^

SyntaxError: Expected identifier, string or number

in _basicRequest method

[baryon]

Merge domain compare request for our branch. ref #4

[baryon]

if has not import 'abort-controller/polyfill', in android 8.1, as exception will raised
TypeError: Cannot set property 'AbortSignal' of undefined