Merge pull request #63 from earthlab/env-update

update MPC version for grading

Author: Leah Wasser

environment.yml

@@ -44,6 +44,6 @@ dependencies:
   - jupyter_contrib_nbextensions
   - nbclean
   # Autograding
-  - matplotcheck=0.0.11
+  - matplotcheck>=0.1
   - nbgrader