Opinionated 2D math library for building GUIs.
Includes vectors, positions, rectangles etc.
Conventions (unless otherwise specified):
* All angles are in radians
* X+ is right and Y+ is down.
* (0,0) is left top.
* Dimension order is always `x y`
## Integrating with other math libraries.
`emath` does not strive to become a general purpose or all-powerful math library.
For that, use something else ([`glam`](https://docs.rs/glam), [`nalgebra`](https://docs.rs/nalgebra), …)
and enable the `mint` feature flag in `emath` to enable implicit conversion to/from `emath`.
## Feature flags