As part of #1153 I'm looking to drop IE11 support.

If I'm honest I never really tested on IE11 but I did consider support while developing and would have fixed any issues (If anyone raised them).

By dropping IE11 we can just focus on browsers that actually attempt to stay up-to-date with standards. Allows good use of new CSS & JS, Should reduced JS size a bit, Perhaps even negate the need for JS transpiling.

This is more of a warning tbh, But would be interested to know if there's anyone that values IE11 support.