Set visible with spines (arviz-devs#559)

* Use set_visible with spine

* Use False inplace of 0

* try with https

* Use pip 18.1

arviz/plots/densityplot.py

@@ -304,5 +304,5 @@ def _d_helper(
     ax.set_yticks([])
     ax.set_title(vname, fontsize=titlesize, wrap=True)
     for pos in ["left", "right", "top"]:
-        ax.spines[pos].set_visible(0)
+        ax.spines[pos].set_visible(False)
     ax.tick_params(labelsize=xt_labelsize)

arviz/plots/forestplot.py

@@ -173,7 +173,7 @@ def plot_forest(
 
         for loc, spine in ax.spines.items():
             if loc in ["left", "right"]:
-                spine.set_color("none")  # don't draw spine
+                spine.set_visible(False)
 
         if len(plot_handler.data) > 1:
             plot_handler.make_bands(ax)

scripts/create_testenv.sh

@@ -40,14 +40,14 @@ fi
 
 
 # Install ArviZ dependencies
-pip install --upgrade pip
+pip install --upgrade pip==18.1
 
 # Pyro install with pip is ~511MB. These binaries are ~91MB, somehow, and do not
 # break the build. The first is the Python 3.5 wheel, the second is 3.6.
 if [ "$PYTHON_VERSION" = "3.5" ]; then
-    pip --no-cache-dir install http://download.pytorch.org/whl/cpu/torch-0.4.1-cp35-cp35m-linux_x86_64.whl
+    pip --no-cache-dir install https://download.pytorch.org/whl/cpu/torch-0.4.1-cp35-cp35m-linux_x86_64.whl
 else
-    pip --no-cache-dir install http://download.pytorch.org/whl/cpu/torch-0.4.1-cp36-cp36m-linux_x86_64.whl
+    pip --no-cache-dir install https://download.pytorch.org/whl/cpu/torch-0.4.1-cp36-cp36m-linux_x86_64.whl
 fi
 
 if [ "$PYSTAN_VERSION" = "latest" ]; then
@@ -70,4 +70,4 @@ fi
 
 #  Install editable using the setup.py
 pip install  --no-cache-dir -r requirements.txt
-pip install --no-cache-dir -r requirements-dev.txt
+pip install --no-cache-dir -r requirements-dev.txt