* Fix pen tool (except overlays)
* Thumbnail of only the layer and not the composite
* Fix occasional transform breakages
* Constrain size of thumbnail
* Insert new layers at the top
* Broken layer tree
* Fix crash when drawing
* Reduce calls to send graph
* Reduce calls to updating properties
* Store cached transforms upon the document
* Fix missing node UI updates
* Fix fill tool and clean up imports and indentation
* Error on overide existing layer
* Fix pen tool (partially)
* Fix some lints