Mention coverage in CONTRIBUTING.md
@@ -8,6 +8,7 @@ Pull requests and Github issues are welcome!
* Please add a description of your change to the Unreleased section of the [changelog](./CHANGELOG.md).
* Please open issues to discuss large features or changes which would break compatibility, before submitting pull requests.
* Please keep H3 compatible with major C compilers, such as GCC, Clang, and MSVC.
+* Please keep code coverage of the core H3 library at 100%.
Before we can merge your changes, you must agree to the [Uber Contributor License Agreement](https://cla-assistant.io/uber/h3).
