Update changelog for temporal effects fix

Author: programmersd21

CHANGELOG.md

@@ -15,6 +15,9 @@
 - Standalone release binaries now collect the full `bangen` package plus `pyfiglet`, Rich, and Pillow runtime assets so the packaged TUI app resolves imports correctly on `Windows`, `macOS`, and `Linux`
 - Project version metadata now reflects `2.2.1`
 
+### Fixed
+- Temporal effects (`fade_in`, `wipe`, `stagger`) now perform continuous looping animations instead of stopping after initial transition
+
 ## [2.2.0]
 
 ### Added