Merge pull request #17 from pkgw/next

Oops: formalize new hard dep on PyYAML

.travis.yml

@@ -21,7 +21,7 @@ notifications:
 env:
   global:
     - CONDA_CHANNELS="conda-forge"
-    - CONDA_DEPENDENCIES="astropy coveralls cython healpy numpydoc pillow pytest-cov sphinx sphinx-automodapi"
+    - CONDA_DEPENDENCIES="astropy coveralls cython healpy numpydoc pillow pytest-cov pyyaml sphinx sphinx-automodapi"
     - PIP_DEPENDENCIES="astropy-sphinx-theme wwt_data_formats"
   matrix:
     - PYTHON_VERSION=3.7

README.md

@@ -73,6 +73,7 @@ well as release listings maintained by
 - [numpy]
 - [pillow]
 - [pytest] to run the test suite
+- [PyYAML]
 - [wwt_data_formats]
 
 [astropy]: https://www.astropy.org/
@@ -82,6 +83,7 @@ well as release listings maintained by
 [numpy]: https://numpy.org/
 [pillow]: https://pillow.readthedocs.io/
 [pytest]: https://docs.pytest.org/
+[PyYAML]: https://github.com/yaml/pyyaml
 [wwt_data_formats]: https://github.com/WorldWideTelescope/wwt_data_formats
 
 

setup.py

@@ -72,6 +72,7 @@ setup_args = dict(
         'cython>=0.20',
         'numpy>=1.7',
         'pillow>=7.0',
+        'PyYAML>=5.0',
         'wwt_data_formats>=0.2.0',
     ],