Improve formatting of series of binop expressions

This commit changes the handling of binops (and potentially other pairs), where
the expressions are logically a list, e.g., `a + b + c`. It makes the single
line vs multi-line approaches explicit and introduces a lowering step.

This improves formatting in a number of places, mostly improving consistency of
formatting with very short sub-expressions, but also some weird indentation.

Closes #2802

0 files changed, 0 insertions, 0 deletions