v9.0.0

Fixes

• Added contribution guidelines
• Updated readme
• Redux/react devtools extensions should now not throw errors in the console on startup (I do notice it only once and upon successful refresh it goes away)
• Application title shows the app is initializing before it's set once the app is loaded
• Added a few placeholders for valid origins for various BrowserWindow events in main.js
• Added an about page
• Added bulma css as an official framework to the app. Updated all pages to use bulma instead of my ugly css
• Cleaned up the undo/redo example page
• Bumped dependencies
• Major dependency bump for html-webpack-plugin from 4.5.1 to 5.0.0