Infrastructure updates notice from Astropy Project

[pllim]

Hello from Astropy Project!

The following updates to your package might be necessary to ensure compatibility with the latest stable version of Astropy:

• MPLBACKEND is now set to Agg in ci-helpers, packages expecting interactive plotting should override it in .travis.yml
• Astropy 3.1 is not compatible with Numpy <1.13 versions. If you want to keep testing these older Numpy versions, please use ASTROPY_VERSION=3.0 or ASTROPY_VERSION=LTS in your Travis CI matrix.
• Add sphinx-astropy as a package dependency if you are using astropy-helpers 3.1 or later. Otherwise, your documentation build (e.g., on ReadTheDocs) might fail.
• If you are using six that is bundled with Astropy, please consider using the standalone six package instead.

If these are no longer applicable to you, please close the issue.

This is an automated issue for Astropy affiliated packages. If this is opened in error, please let @pllim know.

xref astropy/astropy-tools#108

[keflavich]

We seem to have another incompatibility issue in our py2.7 tests:

"This version of Astropy (2.0.11) is incompatible with this version of pytest (4.1.0). Use pytest<3.7."

which is affecting PR #1308. Master might be broken as a result right now?

[bsipocz]

I'll have a look at this in a bit (and also address point #2 from the list above).

[bsipocz]

Master might be broken as a result right now?

yes, that's definitely the case

[bsipocz]

#1334 should fix item no2 from above and the travis failure in #1308. I'll rebase that PR once the fix is merged.

[bsipocz]

Sadly we still support python 2, so the one remaining point from the list above is not relevant yet. I'm thus closing this now.