Eager resolution of tx state causing tons of problems with rest calls in clustering env. since accessing the state will perform epoch validation.

Remove statement acquire from token operations and change token methods to return Iterable instead of ResourceIterable.

Change sampling to be async by default in IndexSamplingController.
Small cleanup around RecoveryCondition.

Make it possible to attach index configuration to the indexes behind index-backed constraints, via Core API.

Do more validation of the given index prototype and schema when creating an index-backed constraint.

This lets us specify the index type of the uniqueness indexes behind index backed constraints.
It also clears the path for setting index configurations on these indexes.

The kernel API needs to be refactored before a proper implementation is possible, though.

The FulltextIndexProvider now verifies that index prototypes have archetypal full-text schemas during index create validation.

LIMIT/SKIP with negative or floating point numbers should fail even
if the input is empty.

This is a new requirement in the TCK.