* New ``stalecheck_middleware`` * Improvements to ``Web3.toHex`` and ``Web3.toText``. * Improvements to ``Web3.sha3`` signature. * Bugfixes for ``Web3.eth.sign`` api
3.13.5
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* Add experimental ``fixture_middleware`` * Various bugfixes introduced in middleware API introduction and migration to formatter middleware.
3.13.4
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* Bugfix for formatter handling of contract creation transaction.
3.13.3
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* Improved testing infrastructure.
3.13.2
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* Bugfix for retrieving filter changes for both new block filters and pending transaction filters.