Readded `classList` and optimized the code for even less disk space usage

This version is aimed at the next version of https://github.com/thednp/bootstrap.native

• Re-added a classList polyfill, but of own development
• reduced the size by referencing largely used text strings from 6k to about 5k

Minor change

• Removed requestAnimationFrame polyfill, 2 lines of code is a bit better
• Added Window seems older Safari

Fixes the window.performance.now() polyfill

Fixes the window.performance.now() polyfill for IE8

Initial Release

0.0.1

Delete minifill.min.js