add release notes to docs
ADD
docs/development/index.md
+# Development
+
+```{toctree}
+:maxdepth: 1
+
+release_notes
+```

ADD
docs/development/release_notes.md
+# Release Notes
+
+## v0.3.1 (Unreleased)
+
+## v0.3.0 - 2021-05-10
+
+Many feature enhancements.
+Non-backwards compatible changes to core API.
+
+## v0.2.0 - 2021-04-26
+
+First release since major Spring 2021 overhaul.
+This release depends on Xarray v0.17.1, which has not yet been released as of the date of this release.
+
+## v0.1.0 - 2020-10-22
+
+First release.

MODIFY
docs/index.md
docs/index.md
@@ -52,5 +52,5 @@ execution
tutorials/index
recipe_box
bakeries
-
+development/index
```

add release notes to docs