- Better handling of the case of a matched declaration that should only
be replaced by other top level things.
- Improved filtering of result of matching atomic patterns
- Drop positions before creating function prototype rules
- Adjust position of { introduced by adding multiple statements in a
single-statement position
- Drop newline after function call ( when all arguments on that line are
eliminated
- Accept removal of a single declaration, replaced by arbitrary,
non-declaration code
- smpl_spacing takes into account newlines, indentation