Merge pull request #255 from CliMA/ck/NEWS

Add NEWS.md

Author: charleskawczynski

NEWS.md

@@ -0,0 +1,24 @@
+ClimaTimeSteppers.jl Release Notes
+========================
+
+v0.7.17
+-------
+- Started NEWS
+- [badge-🤖precisionΔ][badge-🚀performance] increments are now fused in the imex ARK method. This should yield better GPU performance, and may result in machine-precision changes.
+
+<!--
+Contributors are welcome to begin the description of changelog items with badge(s) below. Here is a brief description of when to use badges for a particular pull request / set of changes:
+ - 🔥behavioralΔ - behavioral changes. For example: a new model is used, yielding more accurate results.
+ - 🤖precisionΔ - machine-precision changes. For example, swapping the order of summed arguments can result in machine-precision changes.
+ - 💥breaking - breaking changes. For example: removing deprecated functions/types, removing support for functionality, API changes.
+ - 🚀performance - performance improvements. For example: improving type inference, reducing allocations, or code hoisting.
+ - ✨feature - new feature added. For example: adding support for a cubed-sphere grid
+ - 🐛bugfix - bugfix. For example: fixing incorrect logic, resulting in incorrect results, or fixing code that otherwise might give a `MethodError`.
+-->
+
+[badge-🔥behavioralΔ]: https://img.shields.io/badge/🔥behavioralΔ-orange.svg
+[badge-🤖precisionΔ]: https://img.shields.io/badge/🤖precisionΔ-black.svg
+[badge-💥breaking]: https://img.shields.io/badge/💥BREAKING-red.svg
+[badge-🚀performance]: https://img.shields.io/badge/🚀performance-green.svg
+[badge-✨feature/enhancement]: https://img.shields.io/badge/feature/enhancement-blue.svg
+[badge-🐛bugfix]: https://img.shields.io/badge/🐛bugfix-purple.svg