* Add type hints * Fix isort * tweaks to state attributes * Move lambdas to regular functions * Split CHECK_ATTRIBUTES into DYNAMIC_ATTRIBUTES and FIXED_ATTRIBUTES * Clarify tests * Fix typo
* Add type hints * Fix isort * tweaks to state attributes * Move lambdas to regular functions * Split CHECK_ATTRIBUTES into DYNAMIC_ATTRIBUTES and FIXED_ATTRIBUTES * Clarify tests * Fix typo