added datashader as dep.

Author: brendancol

conda.recipe/meta.yaml

@@ -9,8 +9,7 @@ requirements:
 
   run:
     - python
-    - xarray
-    - numba
+    - datashader
 
 test:
   requires:

setup.py

@@ -7,6 +7,6 @@
       cmdclass=versioneer.get_cmdclass(),
       description='xarray-based spatial analysis tools',
       packages=find_packages(),
-      install_requires=['xarray', 'numba', 'pandas', 'pytest'],
+      install_requires=['datashader', 'pytest'],
       zip_safe=False,
       include_package_data=True)