Buble version breaks rendering

[HarisSpahija]

Issue
When doing a fresh install, docz is not being able to render.

Reproduce issue:
Using node -v //v11.13.0
Using npm -v //6.7.0

Download the repo with npx
npx gatsby-cli new docz-test https://github.com/RobinCsl/gatsby-starter-docz

Initiate gatsby
gatsby develop

Start docz
npm run docz:dev

Expected result
Gatsby and docz open their default pages as shown in the repo

Actual result
Docz crashes and returns in log:

Uncaught TypeError: acorn_jsx__WEBPACK_IMPORTED_MODULE_3___default(...) is not a function
    at eval (buble-browser.es.js?a7b4:4774)
    at Module../node_modules/buble/dist/buble-browser.es.js (vendors.js:680)
    at __webpack_require__ (runtime~app.js:801)
    at fn (runtime~app.js:164)
    at eval (react-live.es.js?849f:1)
    at Module../node_modules/react-live/dist/react-live.es.js (vendors.js:7513)
    at __webpack_require__ (runtime~app.js:801)
    at fn (runtime~app.js:164)
    at eval (index.m.js?1110:1)
    at Module../node_modules/docz-theme-default/dist/index.m.js (vendors.js:5779)
    at __webpack_require__ (runtime~app.js:801)
    at fn (runtime~app.js:164)
    at Module.eval (root.jsx:6)
    at eval (root.jsx:57)
    at Module../.docz/app/root.jsx (app.js:34)
    at __webpack_require__ (runtime~app.js:801)
    at fn (runtime~app.js:164)
    at Module.eval (index.jsx:6)
    at eval (index.jsx:69)
    at Module../.docz/app/index.jsx (app.js:22)
    at __webpack_require__ (runtime~app.js:801)
    at fn (runtime~app.js:164)
    at Object.0 (app.js:59)
    at __webpack_require__ (runtime~app.js:801)
    at checkDeferredModules (runtime~app.js:60)
    at Array.webpackJsonpCallback [as push] (runtime~app.js:47)
    at app.js:1

Solution:
Downgrade buble-browser to "buble": "^0.19.4", (See doczjs/docz#416 (comment))