try other dependency scheme
@@ -36,7 +36,7 @@ requirements:
- scipy >=0.17.1
- numpy >=1.11.0
- ipywidgets >=5.2.2
- - ipython >=5.1.0, <6 # [py<34]
+ - ipython >=5, <6 # [py<34]
- ipython >=6 # [py>=34]
test:
