Natsura 0.5.10.1

Groundwork for 0.6, mappable decorations, and Nanite Assembly improvements.

• Nanite Assemblies now support multiple materials
• Fixed Nanite Assembly export crash
• Mappable decorators groundwork with new mapping template node
• Surface Decorator mapping first pass
• Fixed rigging issues
• Added "Reset Output Attributes" button to Simulate node
• Added simplified Atlas Wizard workflow for beginners and Apprentice users
• Welcome panel overhauled with splash image, recent projects, docs, and Discord access
• Various Surface Decoration meshing bugs fixed
• Surface Decoration mesh pinching issue fixed
• Nanite Assembly workflow improvements