Check the blog post: https://blog.aseprite.org/2023/11/27/aseprite-v13/

And the release notes: https://www.aseprite.org/release-notes/#aseprite-v1-3-2

• Fixed dithering matrix selection in Gradient tool #4184
• Use dynamics for brush preview only for freehand tools #4178
• Highlight dynamics button when some sensor is being used
• Lua: Fix reported crashes handling JSON data #4166 or setting nil to user data #4187