0.41.0

Fixed a bug where if all_columns was used two or more levels deep, it would fail. Thanks to @wmshort for reporting this issue.

Here's an example:

Concert.select(
    Concert.venue.name,
    *Concert.band_1.manager.all_columns()
).run_sync()

Also, the ColumnsDelegate has now been tweaked, so unpacking of all_columns is optional.

# This now works the same as the code above (we have omitted the *)
Concert.select(
    Concert.venue.name,
    Concert.band_1.manager.all_columns()
).run_sync()