image:flip() is not documented under Image #43
Description
The API overview on the website doesn't mention the Image:flip() function, nor the expected arguments on the Image page. https://www.aseprite.org/api/image#image
The only reason I found out it existed is from the patchnotes for Aseprite v1.3-rc4. FlipType is documented, although it seems like a floating page, that isn't linked from anywhere unless you search for it.
At first I thought it might not be documented yet due to being experimental still, but as far as I know 1.3 is out!
I haven't checked whether the other recently added functions are documented on the API website