fix ref
refactoring commands so they use a unique asset ref instead of asset name
second pass of AssetRef refactor
More assetref refactor
Mostly finished assetref refactor. fix: crash on close partwidget
fix: morebugs
Added single entrypoint TryCommand for all commands
fix: crash on exit.
Renamed commands
Adding folder asset type
More work on folders and treewidget
Tree widget now supports moving things between folders
Replaced old list with new tree widget, much nicer!
Can select multiple assets and copy or delete them all in one go
Updated save format to support folders
Can delete asset from list with delete key. Shrunk border around part
little comment
Added a potential dark stylesheet. Eraser now erases to background colour.
Added optional grid pattern bg
Added darkorange theme, playing around