Add changelog file

CHANGELOG.md

@@ -0,0 +1,20 @@
+# Changelog
+
+## Version v1
+
+Initial resease!
+
+
+## Version v2
+
+- Add adjustable text font size per project.
+- Various fixes for correct animation playback.
+- Add `speed` modifier for animation states to adjust all animations played by this state.
+	- After creating an animation state, you can set the speed of all animations played by this state by setting the `speed` property.
+	- Example: `animation_state.speed = 1.5`
+- Update documentation.
+- Update GO and GUI adapters:
+	- GO now supports `color` and `slice9` properties.
+	- The default sprite color property is `tint`. To use panthera color property, use `/panthera/materials/sprite/sprite.material` or any other with `color` property.
+	- GUI: fix slice9 property.
+	- GUI: fix for pie vertices and piebounds properties.

README.md

@@ -571,6 +571,10 @@ Panthera Runtime is licensed under the MIT License - see the [LICENSE](/LICENSE)
 
 For any issues, questions, or suggestions, please [create an issue](https://github.com/Insality/panthera/issues).
 
+## Changelog
+
+Read the [CHANGELOG](/CHANGELOG.md) to learn about the latest updates and features in Panthera Runtime.
+
 
 ## 👏 Contributors