* Multi-batch splitting
* Invoke split predicates by name, passing in full argument list
* Reorder batches to prevent failure of forward references where possible
* Rename APIs for clarity
* Simplify example
* Add more docs
* Review updates
* Remove duplicate code
* Comment topological sort algorithm
* Basic frontend AST and semantic validation
* Intro statement support
* Simplify validator lifetime
* Fix arity validation
* Lowering and splitting
* Remove legacy processor and use frontend AST by default
* Use builders instead of creating middleware types directly
* Typos/formatting
* Improve error messages when overflowing a batch due to splitting
* Add FromStr implementation for NativePredicate
* Remove 'raw' fields, and switch HashHex representation to byte vector rather than string
* Simpler wrapper types for batch and intro predicate hashes
* Parse secret and public keys to their respective data structures earlier
* More detail around string escape validity
* Simplify native predicate arity handling and move method to NativePredicate impl
* Store hashes using middleware::Hash, and simplify lowering by using pre-parsed values
* Simplify predicate building
* Formatting
* Better error messages/suggestions for cases where predicate splitting fails
* Formatting
* Clippy fix
* Return error if we get a too-large int
* Basic 'use' syntax for importing custom predicates
* Add extra test for unknown batches
* Fix unused import
* Enforce that imports must match number of predicates in a batch
* Initial commit for Podlog language
* Spell-checker thinks that 'lits' is a bad abbreviation for 'literals'
* Enable SetContains/SetNotContains
* Update language based on review feedback
* Typo/comment fix
* Make native predicates case-sensitive
* Enforce max batch size in CustomPredicateBatchBuilder
* Remove some unnecessary checks for things handled by the grammar
* Clean up more unnecessary error-checking
* Typo
* Simplify hex processing
* Replace various errors with unreachable!()
* Translate from big-endian hex string to little-endian RawValue
* Update hex en/decoding functions
