Add automatic nbstripout to jupyter notebooks

Automatically removes output from notebooks for easier version control.

.gitattributes

@@ -0,0 +1,3 @@
+*.ipynb filter=nbstripout
+
+*.ipynb diff=ipynb

README.md

@@ -48,6 +48,7 @@ Jupyter notebooks have been set up to help explore the data. Once you have set u
 ```
 make notebook
 ```
+Notebooks use nbstripout to remove output before committing.
 
 ## Available data
 Raw, interim and processed data used in this analysis is kept in the `/data/` folder. Data is not tracked in the repository due to size constraints, but stored locally. A mirror is kept of the coastal folder J drive which you can

environment.yml

@@ -16,6 +16,7 @@ dependencies:
   - matplotlib
   - line_profiler
   - nbformat
+  - nbstripout
   - notebook
   - numpy
   - pandas