Even moar cleanup
Helper method for ->body_cols
Loading message - hardcoded for now
Fix header rendering
Render failed/pending rows

If a row fails, we probably want to show some information about it.
Likewise if a row is still loading, might as well display the loading
message until the next expose event.
Failed/pending row rendering
Fix start/value handling

This is already populated by distribute(), no need to reapply.
Remove junk
More examples
Transformation docs
Group keybinding methods together