Deprecation (API)
* Certain low-level functions have been marked as private (such as the former `nwbinspector.register_checks.auto_parse`) indicating they should not have been imported by downstream users. [485](https://github.com/NeurodataWithoutBorders/nwbinspector/issues/485)
* Various inappropriate imports from certain submodules have been hard deprecated (e.g., `from nwbinspector.inspector_tools import natsorted`). [485](https://github.com/NeurodataWithoutBorders/nwbinspector/issues/485)
Pending Deprecation (API)
* The `inspector_tools`, `register_check`, and `` submodules have been soft deprecated and will be removed in the next major release. [485](https://github.com/NeurodataWithoutBorders/nwbinspector/issues/485)
Improvements
* Update util function `is_ascending_series` to discard nan values and add `check_timestamps_without_nans` fun to check if timestamps contain NaN values [476](https://github.com/NeurodataWithoutBorders/nwbinspector/issues/476)
* Updated the import structure to match modern Python packaging standards. [485](https://github.com/NeurodataWithoutBorders/nwbinspector/issues/485)