crates/notebook/src/session.rs       | 167 +++++++++++++++++++++-------
 crates/notebook/src/session/tests.rs | 188 +++++++++++++++++++++++++++++++-
 crates/onestore/src/commit.rs        |   9 ++
 crates/snowbound/src/undo.rs         |  10 +-
 4 files changed, 328 insertions(+), 46 deletions(-)