changelog: Add changes from R4g3D and myself

changelog.md

@@ -1,5 +1,16 @@
 # Changelog - Patch Notes
 
+## Version 1.2.3
+- **Refactor and UI cleanup:** Convert to Flipper Zero UI modules for simpler interface, reduce binary size.
+- **Add Features:** Add ability to set custom pokemon nickname or default, add ability to set OT name and ID, add ability to select pokemon type(s). Note that, an evolution as well as a couple of different attacks will cause this to be overwritten with the pokemon's default values.
+- **Bug Fixes:** Fix strange issue with exp gain causing traded pokemon to de-level and result in incorrect stats.
+
+## Version 1.2.2
+- **Extended Functionality:** Add support to set level, select moves, set up EV/IV to a few predefined configurations, set up stats based on level and EV/IV settings, set nickname to default pokemon name.
+
+## Version 1.2.1
+- **Add github action to build**
+
 ## Version 1.2.0
 - **Cleanup data structs:** This refactors the main data blocks for defining pokemon, the icon, their species/hex value, as well as the large trade array in to more human friendly structs. Laying some groundwork to be able to adjust pokemon details pre-trade by @kbembedded .
 - **Bug Fixes:** Fix furi crash, Fixes #9 by @kbembedded .