=====
added
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- Added example data and tutorial notebook
- Added unit tests
- Additional documentation
- Detection of time series axis in stacks - will raise a warning if supplied axis in
stack registration does not correspond to the detected axis
changed
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- `progress_callback` function now gets called with the iteration number, not
iteration index (iteration number = iteration index + 1)
fixed
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- Fixed exception when using a different axis than 0 for registering stacks