Update badges

Author: simonw

README.md

@@ -1,7 +1,8 @@
 # csv-diff
 
 [![PyPI](https://img.shields.io/pypi/v/csv-diff.svg)](https://pypi.org/project/csv-diff/)
-[![CircleCI](https://circleci.com/gh/simonw/csv-diff.svg?style=svg)](https://circleci.com/gh/simonw/csv-diff)
+[![Changelog](https://img.shields.io/github/v/release/simonw/csv-diff?include_prereleases&label=changelog)](https://github.com/simonw/csv-diff/releases)
+[![Tests](https://github.com/simonw/csv-diff/workflows/Test/badge.svg)](https://github.com/simonw/csv-diff/actions?query=workflow%3ATest)
 [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/simonw/csv-diff/blob/main/LICENSE)
 
 Tool for viewing the difference between two CSV files. See [Generating a commit log for San Francisco’s official list of trees](https://simonwillison.net/2019/Mar/13/tree-history/) (and the [sf-tree-history repo commit log](https://github.com/simonw/sf-tree-history/commits)) for background information on this project.