A "leaf" is a check-in with no children in the same branch. A "closed leaf" is a leaf that has a "closed" tag. An "open leaf" is a leaf without a "closed" tag.
- Show all leaves
- Show only closed leaves
- No graph
- Hide check-ins with "hidden" tag
- Show only check-ins with "hidden" tag
- Background color by branch name
- Background color by user name