As with most complex script mods, installation requires a little bit of know-how.
The latest update, version 0.9.1.13 (v09113), brings several exciting changes, including: flight of the swallow v09113 by marinekelley upd
Given the technical nature of the identifier that follows, this is likely a render or a resource pack (like sprite sheets, vector sequences, or 3D model animations) rather than a static painting. As with most complex script mods, installation requires