Disable optional tests for Python 3.7 due to shapely incompatibility

Author: jonmmease

Diff for: .circleci/config.yml

@@ -217,7 +217,8 @@ workflows:
       - "python-3.4-optional"
       - "python-3.5-optional"
       - "python-3.6-optional"
-      - "python-3.7-optional"
+      # 3.7 optional disabled due to current shapely incompatibility
+      # - "python-3.7-optional"
       - "python-2.7-plot_ly"
       - "python-3.4-plot_ly"
       - "python-3.7-plot_ly"

Diff for: tox.ini

@@ -64,7 +64,7 @@ deps=
     optional: jupyter==1.0.0
     optional: pandas==0.19.2
     optional: scipy==0.18.1
-    optional: shapely==1.6.4.post2
+    optional: shapely==1.6.4
     optional: geopandas==0.3.0
     optional: pyshp==1.2.10
     optional: pillow==5.2.0