wip
wip
wip
Fix up comments a bit.
Flesh out EdgeRange.
Clarify role of UniformNode::Hasher.
Document 'still heap' assumption. Suggest 'mark bit'.
Minor fixes to #preprocessor directives.
Tweaks.
Add RootInfo variant. Hide untyped constructor; add typed constructors. Expand on comments; reformat.
Add dynamic-dispatch edge enumeration.
Make heap-walk.h actually compile. Not as neat, now. :(