2.8.4

New features

• Editing a Scatter node path can be slow with a lot of items. The new Preview count parameter lowers this number while
  the curve is edited. (Negative values disable the preview feature).
• New modifier Distribute along path (Continuous). Perfect for fences or other scenarios where the items need to touch each other in a continuous way. (Closes #23)
• A default ScatterItem node is automatically added if none exists under a Scatter node

Bug fixes

• UI fixes and performance boost on long paths.
• Merge target meshes now uses the MeshInstance materials in priority over the ones defined on the mesh resource.
• Removed a dependency to the demo assets. This folder is now safe to delete.
• Scatter no longer throws errors if the curve is empty.
• Duplicating Scatter nodes in embedded scenes no longer leaves leftover nodes behind.