Summary
- merged
- more informative Spec_Rules.Equational, notably primrec argument types;
- clarified signature: avoid direct comparison on type rough_classification;
- tuned proofs;
- removed spurious debugging;
- export propositional status of consts;
- merged
- generalised homotopic_with to topologies; homotopic_with_canon is the old version
- follow up on Braun: get timing function right
- Tweak Braun tree list_fast_rec recursion. A minor adjustment simplifies the termination argument slightly.