* Dedupe statements during POD-building
* Fix failure to assume existence of Contains statement
* Remove possible source of non-determinism
* Faster ILP backend
* Formatting
* Create multiple PODs where resource limits for a single POD are exceeded
* HashSet -> BTreeSet determinism fix
* Fixed incorrect assignment of input PODs and added test
* Ensure only a single output POD
* Return error when reveal() called with unknown statement
* Use unreachable! for presumed-impossible cases
* Use assert_eq! rather than debug_assert_eq
* Use FIFO for topological sort
* Simplify bounds calculation
* Some more simplifications/comments
* Enforce dep_idx < idx invariant
* Incrementally solve rather than estimating slack
* Fix tests to correctly test dependencies between private and public statements
* More tidying
* Note possible optimisation of MainPodBuilder cloning of input PODs
* Fix tracking of total input POD count
* Refactor tests
* Formatting
* Small optimisation: use Vec in place of BTreeSet
* Account for automatically-inserted Contains statements
* Formatting
* Fix possible issue with copied statements
* Simplify result type given only a single result MainPod
* Remove unnecessary POD count estimate functionality
* Simplify dependency ordering and tracking
* Remove notion of multiple output PODs from solver
* Minor simplifications
* Use add_constraint instead of with
* Remove unnecessary check following assertion
* Fix handling of anchored keys given that Contains statements are not auto-inserted if they already exist
* Fix confusing dependency graph test
* Remove prove_order
* Fix deduplication and possible double-counting of public but not copied statements
* Reorder so that the output POD is the final POD
* Add more detailed tests
* Remove redundant tests
* Simplify POD counting
* More docs
* Flag more branches as unreachable
* Formatting
* Fix for changed custom batch parsing
