What's Changed
* chore: remove setup.py by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/111
* refactor: move iterator into new module by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/112
* perf: significantly speedup iteration of MDASequences. (breaking change, removes `__len__` methods) by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/113
* docs: update units of exposure in docstring to ms by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/114
* docs: update readme by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/115
* feat: Add FOV size to grid spec by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/116
* feat: add estimate of MDASequence duration, without iterating by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/117
* refactor: move pycromanager stuff to new module, update docs a bit by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/118
* refactor: make fov_width/fov_height mutable on GridPlans by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/121
* feat: add `keep_shutter_open_across` to MDASequence by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/119
* feat: support both pydantic1 and pydantic2 by tlambert03 in https://github.com/pymmcore-plus/useq-schema/pull/122
**Full Changelog**: https://github.com/pymmcore-plus/useq-schema/compare/v0.3.2...v0.4.0