Allow grouping by parent task
With the great new subtasks in core, it would be great to be able to group an issue list by parent task.
Right now it almost seems like a bug that subtasks are indented in the listing only if there is a parent task above it but regardless of if it is that tasks parent.
I think there is also room for a toggle or filter option that disables the indentation. Perhaps this would be tied to this grouping option, but it doesn't have to be.