NDMeta.rebin can't handle all inputs

[Cadair]

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Describe the bug

I'm pretty sure it breaks on -1 and 1 but I don't have a good MWE sorry

To Reproduce

No response

Screenshots

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System Details

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Installation method

No response

[DanRyanIrish]

I don't seem to be able to reproduce this bug. The below MWE works.

>>> import astropy.units as u
>>> from ndcube import NDCube

>>> meta = NDMeta({"exposure_time": np.arange(9)*u.s}, axes={"exposure_time": 0})
>>> meta.slice[1]
{'exposure_time': <Quantity 1. s>}
>>> meta.slice[-1]
{'exposure_time': <Quantity 8. s>}