Add environment file and ipynb diff

.gitattributes

+*.ipynb filter=nbstripout
+*.zpln filter=nbstripout
+*.ipynb diff=ipynb

environment.yml

+name: tutorial
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - ipython=8.4.*
+  - jupyter=1.0.*
+  - jupyterlab=3.5.*
+  - matplotlib=3.5.*
+  - nbstripout=0.6.*
+  - pip=22.1.*
+  - psutil=5.9.*
+  - pytest=7.1.*
+  - python=3.9.*
+  - scipy=1.7.*
+  - tqdm=4.64.*
+  - pip:
+    - emcee==3.0rc2
+    - numpy==1.22.*
+    - pylint==2.14.*
+    - pythia-uq==3.0.*