An extension that adds a functional (albeit unrefined) bezier curve cage transform tool for Pixelorama.
Simply make a selection on your canvas and switch to the tool to begin transforming and press Enter to commit the transform.
Note: At the moment, the tool does not account for the strange interactions that are possible due to Pixelorama's separation of right/left mouse tools (eg. drawing or modifying the selection while the transform is in progress). For best results, do not use any other tool while the transform is active.
Download the latest .pck from Releases or clone the repository and export a .pck via Godot. Load the .pck as an extension in Pixelorama.