add script entry point

Signed-off-by: Nathaniel Starkman (@nstarman) <[email protected]>

setup.cfg

@@ -14,20 +14,27 @@ github_project = nstarman/discO
 [options]
 zip_safe = False
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 setup_requires = setuptools_scm
 install_requires =
     astropy
-    numpy
-    PyYAML
-    scipy
+    numpy>1.20
     typing_extensions
+    importlib-metadata
+    scikit-learn>0.18
+    healpy>=1.15.0
+    tqdm
+    astroquery
+    Cython
+
+[options.entry_points]
+console_scripts =
+    make_gaia_err_field = discO.data.err_field.script:main
 
 [options.extras_require]
 all =
     gala
     galpy  @ git+https://github.com/jobovy/galpy.git
-    tqdm
 test =
     pytest-astropy
 docs =