Submodel duplication and deletion, greatly expanded undo/redo functionality, autogen paths, and lots of bugfixes.

What's Changed

• Lots of dependency updates and suppress egui undo by @Baezon in #161
• Add recalculation of visual center by @Baezon in #162
• Display bbox radius offset buttons by @Baezon in #163
• update crates by @Baezon in #166
• make sure subobjects without children auto import too by @Baezon in #165
• Ensure Header Radius incorporates shield mesh by @wookieejedi in #170
• Overhaul undo system by @Baezon in #174
• map_or(false, to is_some_and( by @Baezon in #175
• Auto gen paths feature by @MjnMixael in #176
• Add subobject duplication and deletion by @Baezon in #177
• "SubObject" -> "Submodel" by @Baezon in #178

New Contributors

• @wookieejedi made their first contribution in #170
• @MjnMixael made their first contribution in #176

Full Changelog: v1.5.3...v1.6.0