m2-syn 0.7.0

Changes

• Expose frame_recovering and FramedCells as a stateless API for cell framing. Callers receive completed cells alongside an optional incomplete tail, with original source spans and trivia preserved.
• For example, a = 1\nf = x -> ( yields the completed a = 1 cell and the incomplete f = x -> ( tail.
• CellStream::new retains its existing behavior and still rejects an incomplete final cell.

Validation

• Packaged tests and doctests pass with and without default features.
• Packaged all-target Clippy passes with warnings denied.
• All-feature rustdoc passes with warnings denied.
• Package builds against the released m2-syn-macros 0.6.0 dependency.