Better easeInCirc and easeOutCirc formulas

The formulas used in easeInCirc and easeOutCirc are not actually a circle shape.
They're parabolas.
After goofing around, I've made two formulas that I think would be more accurate.
```javascript
function easeInCirc(x: number): number {
return 1 - Math.cos(Math.asin(x));
}
function easeOutCirc(x: number): number {
return Math.sin(Math.acos(x - 1));
}
```