update the changelog for a new version

bhazelton · bhazelton · commit d5515e11b331 · 2021-10-14T16:15:15.000-07:00
to fix conda builds once and for all!
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [2.2.4] - 2021-10-14
+
 ### Fixed
 - Fixed a bug in converting non-crosspol power beams to real in `UVBeam.efield_to_power`.
 
