This PR is intended to do some housecleaning ahead of our developer
release.
It:
- co-locates code in the `Editor` class, i.e. moving shape-related
methods next to other shape-related methods
- renames `cullingBounds` and other culling-related names to
`renderingBounds`
- renames `Editor.getParentPageId` to `Editor.getAncestorPageId`
- renames `Editor.shapeIds` to `Editor.currentPageShapeIds`
### Change Type
- [x] `major` — api changes
271d0088e9