use object instead of np.object

[mathause]

From the xarray test suite:

DeprecationWarning: `np.object` is a deprecated alias for the builtin `object`.
To silence this warning, use `object` by itself. Doing this will not modify any behavior and is safe.
Deprecated in NumPy 1.20; for more details and guidance: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

ref: https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

[mathause]

I don't think the failures are related...

[bjlittle]

@mathause Sorry for being so late to this.

Is it possible for you to sign the CLA? Our CLA bot should have sent you an email?

[bjlittle]

Also, we need to show some love to nc-time-axis to migrate it away from travis-ci... and that's not your problem, that's on us 👍

[mathause]

I signed the CLA. Yes, I know there is constantly a tool to be updated...

[bjlittle]

@mathause Awesome, thanks.

I'm actively working on a pull-request to re-boot nc-time-axis CI et al. Once that's landed, you'll need to rebase.

I'll ping you here when we're good to go 👍

[bjlittle]

Closed by #66