[yason]

Paraphrasing "as simple as possible but no simpler than that": ship as small diffs as you can but no smaller than that which makes sense.

Individual commits don't necessarily make sense in the whole. Submit diffs which make up a logical, conceptual block of new changes. Don't mix formatting changes, whitespace cleanups, or rearranging changes into diffs with real meat. Ship new prerequisite tools and new changes to utility functions or libraries first, then the meat: i.e. split general codebase upgrades and distinct features into different shipments.

Make it so that "git log" will produce a list of sensible steps if someone else reads the listing. Remember, 90% of programming is writing good code and the other 90% of programming is communication to others.