fix README: Based on earcut 3.0.1

mapbox/earcut v3.0.1 (#19)

Use stable sort (#17)

* Update README to reflect earcut(-js) 3.0.0 release

* stable sort

0.4.1 (#12)

Use [T; 2] as a vertex + some optimizations (#11)

* perf

* no_std

* more

* improve

* improments

* benchmarks on readme

v0.3.1 (#8)

Improve API (copied iterator, flat indices) (#7)

* v0.2

* update utils3d

* Improve API

* Use f64 instead of [f64; 2] (similar to JS api)

Major API changes (#5)

* v0.2

* update utils3d