This is an importer for Aseprite files. The code is based on code originally published in the Metasprite project.
However this importer here is a heavily rewritten version. It no longer requires separate asset files to hold import configuration data and stores all imported artefacts as sub-objects of the original Aseprite file.
The import will automatically import animations.
Copy the contents of this repository into a sub-directory in "Assets/Plugins" in your unity project.