0.11.33 — formatting the sources

This release changes not one statement. It changes whitespace and line breaks in the engine sources — and it had to go out on its own, ahead of any other change.

The reason is mechanical. An instance receives engine files through engine-sync, by copying. Had the engine stayed unformatted and the instance been reformatted, the first synchronisation would have undone the instance's formatting — and the other way round. Two sides fixing the same file in two different ways is a loop you do not escape by being careful.

A separate commit, because mixing whitespace with substantive fixes makes history unreadable. Whoever one day goes looking for why a line reads the way it does should land on a release that says outright: there is no decision here, only whitespace.