DOC: Finalize 0.3.3 release notes

Author: mattwthompson

docs/releasehistory.md

@@ -9,7 +9,7 @@ Releases follow versioning as described in
 
 Please note that all releases prior to a version 1.0.0 are considered pre-releases and many API changes will come before a stable release.
 
-## Current development
+## 0.3.4 - 2023-05-14
 
 ### Bugfixes