remove specific version dependency on path.py

replaced auto channel by david_baddeley on for Pyro
solved conflict with setuptools

conda/environment_mdanse.yml

@@ -2,7 +2,7 @@ name: mdanse
 
 channels:
 
-  - auto
+  - david_baddeley 
   - conda-forge
   - anaconda
   - defaults
@@ -19,13 +19,13 @@ dependencies:
 
   - cython
 
-  - python=2
+  - python=2.7
   - ipython
   - ipykernel
-  - path.py==7.6
+  - path.py
   - sphinx
   - setuptools
-  - numpy=1.8
+  - numpy
   - matplotlib
   - pyro
   - wxpython