use svg logo
[![GitHub stars](https://img.shields.io/github/stars/nschloe/meshio.svg?logo=github&label=Stars)](https://github.com/nschloe/meshio)
<p align="center">
- <img src="https://nschloe.github.io/meshio/meshio_logo.png" width="20%">
+ <img src="https://nschloe.github.io/meshio/meshio_logo.svg" width="20%">
</p>
There are various mesh formats available for representing unstructured meshes,
